EN 10088-1 Standard Guide

Stainless steels – Part 1: List of stainless steels

1. Steel Numbering System

Steel Numbering System (EN 10027-2)

1.40xx: < 2.50% Ni, without Mo/Nb/Ti

1.41xx: < 2.50% Ni, with Mo, without Nb/Ti

1.43xx: ≥ 2.50% Ni, without Mo/Nb/Ti

1.44xx: ≥ 2.50% Ni, with Mo, without Nb/Ti

1.45xx/1.46xx: Special additions

1.47xx: Heat resistant, < 2.50% Ni

1.48xx: Heat resistant, ≥ 2.50% Ni

1.49xx: Creep resistant

2. Austenitic Stainless Steels | Corrosion Resistant Steels

Steel Name	Steel Number	C max %	Si max %	Mn max %	P max %	S max %	Cr range %	Mo max %	Ni range %	N max %	Cu max %	Others
X10CrNi18-8	1.4310	0.030-0.15	2.00	2.00	0.045	0.015	16.0-19.0	0.80	6.0-9.5	0.10	–	–
X2CrNi18-9	1.4307	0.030	1.00	2.00	0.045	0.015	17.5-19.5	–	8.0-10.5	0.10	–	304L
X9CrNi18-9	1.4325	0.030-0.15	1.00	2.00	0.045	0.030	17.0-19.0	–	8.0-10.0	–	–	–
X8CrNiS18-9	1.4305	0.10	1.00	2.00	0.045	0.15-0.35	17.0-19.0	–	8.0-10.0	0.10	1.00	Free machining, S for machinability
X6CrNiCuS18-9-2	1.4570	0.08	1.00	2.00	0.045	0.15-0.35	17.0-19.0	0.60	8.0-10.0	0.10	1.40-1.80	Free machining
X3CrNiCu18-9-4	1.4567	0.04	1.00	2.00	0.045	0.015	17.0-19.0	–	8.5-10.5	0.10	3.00-4.0	Cu for improved corrosion
X5CrNiN19-9	1.4315	0.06	1.00	2.00	0.045	0.015	18.0-20.0	–	8.0-11.0	0.12-0.22	–	N-strengthened
X3CrNiCu19-9-2	1.4560	0.035	1.00	1.50-2.00	0.045	0.015	18.0-19.0	–	8.0-9.0	0.10	1.50-2.00	–
X5CrNiCu19-6-2	1.4640	0.030-0.08	0.50	1.50-4.0	0.045	0.015	18.0-19.0	–	5.5-6.9	0.030-0.11	1.30-2.00	–
X2CrNiN18-10	1.4311	0.030	1.00	2.00	0.045	0.015	17.5-19.5	–	8.5-11.5	0.12-0.22	–	304LN
X5CrNi18-10	1.4301	0.07	1.00	2.00	0.045	0.015	17.5-19.5	–	8.0-10.5	0.10	–	304 – Most common
X2CrNiSi18-10	1.4682	0.03	0.80-2.0	2.00	0.045	0.015	17.5-19.5	0.40-0.80	9.0-11.0	0.10	–	Si for high temp oxidation
X6CrNiTi18-10	1.4541	0.08	1.00	2.00	0.045	0.015	17.0-19.0	–	9.0-12.0	–	–	Ti: 5×C-0.70, 321
X6CrNiNb18-10	1.4550	0.08	1.00	2.00	0.045	0.015	17.0-19.0	–	9.0-12.0	–	–	Nb: 10×C-1.00, 347
X2CrNiCu19-10	1.4650	0.030	1.00	2.00	0.045	0.015	18.5-20.0	–	9.0-10.0	0.08	1.00	–
X2CrNi19-11	1.4306	0.030	1.00	2.00	0.045	0.015	18.0-20.0	–	10.0-12.0	0.10	–	304L
X4CrNi18-12	1.4303	0.06	1.00	2.00	0.045	0.015	17.0-19.0	–	11.0-13.0	0.10	–	305
X1CrNiSi18-15-4	1.4361	0.015	3.7-4.5	2.00	0.025	0.010	16.5-18.5	0.20	14.0-16.0	0.10	–	High Si
X8CrMnCuN17-8-3	1.4597	0.10	2.00	6.5-9.0	0.040	0.030	15.0-18.0	1.00	3.00	0.10-0.30	2.00-3.5	Mn-bearing
X8CrMnNi19-6-3	1.4376	0.10	1.00	5.0-8.0	0.045	0.015	17.0-20.5	–	2.00-4.5	0.30	–	200 series
X3CrMnNiCu15-8-5-3	1.4615	0.030	1.00	7.0-9.0	0.040	0.010	14.0-16.0	0.80	4.5-6.0	0.02-0.06	2.0-4.0	–
X12CrMnNiN17-7-5	1.4372	0.15	1.00	5.5-7.5	0.045	0.015	16.0-18.0	–	3.5-5.5	0.05-0.25	–	201
X2CrMnNiN17-7-5	1.4371	0.030	1.00	6.0-8.0	0.045	0.015	16.0-17.5	–	3.5-5.5	0.15-0.25	1.00	–
X9CrMnNiCu17-8-5-2	1.4618	0.10	1.00	5.5-9.5	0.070	0.010	16.5-18.5	–	4.5-5.5	0.15	1.00-2.50	–
X30MnCrN16-14	1.4678	0.20-0.40	1.00	14.0-18.0	0.045	0.015	12.0-16.0	–	–	0.20-0.40	2.00	High Mn austenitic
X12CrMnNiN18-9-5	1.4373	0.15	1.00	7.5-10.5	0.045	0.015	17.0-19.0	–	4.0-6.0	0.05-0.25	–	202
X8CrMnNiN18-9-5	1.4374	0.05-0.10	0.30-0.60	9.0-10.0	0.035	0.030	17.5-18.5	0.50	5.0-6.0	0.25-0.32	0.40	–
X11CrNiMnN19-8-6	1.4369	0.07-0.15	0.50-1.00	5.0-7.5	0.030	0.015	17.5-19.5	–	6.5-8.5	0.20-0.30	–	–
X13CrMnNiN18-13-2	1.4020	0.15	1.00	11.0-14.0	0.045	0.030	16.5-19.0	–	0.5-2.5	0.20-0.45	–	–
X6CrMnNiN18-13-3	1.4378	0.08	1.00	11.5-14.5	0.060	0.030	17.0-19.0	–	2.3-3.7	0.20-0.40	–	–
X6CrMnNiCuN18-12-4-2	1.4646	0.02-0.10	1.00	10.5-12.5	0.050	0.015	17.0-19.0	0.50	3.5-4.5	0.20-0.30	1.50-3.00	Patented grade*
X3CrMnNiN20-9-6	1.4391	0.040	1.00	8.0-10.0	0.045	0.030	19.0-21.5	0.75	5.5-7.5	0.15-0.40	–	–
X1CrNi25-21	1.4335	0.020	0.25	2.00	0.025	0.010	24.0-26.0	0.20	20.0-22.0	0.10	–	310S
X6CrNi23-13	1.4833	0.04-0.10	1.50	2.00	0.045	0.015	22.0-24.0	–	12.0-14.0	–	–	309
X8CrNi25-21	1.4845	0.05-0.10	1.50	2.00	0.045	0.015	24.0-26.0	–	19.0-22.0	–	–	310
X2CrNiMoCuS17-10-2	1.4598	0.030	1.00	2.00	0.045	0.10-0.20	16.5-18.5	2.00-2.50	10.0-13.0	0.10	1.30-1.80	Free machining
X3CrNiCuMo17-11-3-2	1.4578	0.04	1.00	2.00	0.045	0.015	16.5-17.5	2.00-2.50	10.0-11.0	0.10	3.0-3.5	–
X2CrNiMoN17-11-2	1.4406	0.030	1.00	2.00	0.045	0.015	16.5-18.5	2.00-2.50	10.0-12.5	0.12-0.22	–	316LN
X2CrNiMo17-12-2	1.4404	0.030	1.00	2.00	0.045	0.015	16.5-18.5	2.00-3.0	10.0-13.0	0.10	–	316L – Very common
X5CrNiMo17-12-2	1.4401	0.07	1.00	2.00	0.045	0.015	16.5-18.5	2.00-2.50	10.0-13.0	0.10	–	316
X6CrNiMoTi17-12-2	1.4571	0.08	1.00	2.00	0.045	0.015	16.5-18.5	2.00-2.50	10.5-13.5	–	–	Ti: 5×C-0.70, 316Ti
X6CrNiMoNb17-12-2	1.4580	0.08	1.00	2.00	0.045	0.015	16.5-18.5	2.00-2.50	10.5-13.5	–	–	Nb: 10×C-1.00, 316Nb
X2CrNiMoN21-9-1	1.4420	0.030	1.00	2.00	0.045	0.015	19.5-21.5	0.50-1.50	8.0-9.5	0.14-0.25	1.00	Patented grade*
X2CrNiMo17-12-3	1.4432	0.030	1.00	2.00	0.045	0.015	16.5-18.5	2.50-3.00	10.5-13.0	0.10	–	316L
X3CrNiMo17-12-3	1.4436	0.05	1.00	2.00	0.045	0.015	16.5-18.5	2.50-3.00	10.5-13.0	0.10	–	316
X3CrNiMo18-12-3	1.4449	0.035	1.00	2.00	0.045	0.015	17.0-18.2	2.25-2.75	11.5-12.5	0.08	1.00	–
X2CrNiMoN17-13-3	1.4429	0.030	1.00	2.00	0.045	0.015	16.5-18.5	2.50-3.00	11.0-14.0	0.12-0.22	–	316LN
X2CrNiMoN18-12-4	1.4434	0.030	1.00	2.00	0.045	0.015	16.5-19.5	3.00-4.0	10.5-14.0	0.10-0.20	–	–
X2CrNiMo18-14-3	1.4435	0.030	1.00	2.00	0.045	0.015	17.0-19.0	2.50-3.00	12.5-15.0	0.10	–	317L
X2CrNiMoN17-13-5	1.4439	0.030	1.00	2.00	0.045	0.015	16.5-18.5	4.0-5.0	12.5-14.5	0.12-0.22	–	317LMN
X2CrNiMo18-15-4	1.4438	0.030	1.00	2.00	0.045	0.015	17.5-19.5	3.00-4.0	13.0-16.0	0.10	–	317L
X5CrNiMnMoNNbV22-12-5-2	1.4681	0.060	1.00	4.0-6.0	0.045	0.030	20.5-23.5	1.5-3.0	11.5-13.5	0.20-0.40	–	Nb: 0.10-0.30, V: 0.10-0.30
X1CrNiMoCuN20-18-7	1.4547	0.020	0.70	1.00	0.030	0.010	19.5-20.5	6.0-7.0	17.5-18.5	0.18-0.25	0.50-1.00	254 SMO – Superaustenitic
X1CrNiMoN25-22-2	1.4466	0.020	0.70	2.00	0.025	0.010	24.0-26.0	2.00-2.50	21.0-23.0	0.10-0.16	–	310MoLN
X1CrNiMoCuNW24-22-6	1.4659	0.020	0.70	2.00-4.0	0.030	0.010	23.0-25.0	5.5-6.5	21.0-23.0	0.35-0.50	1.00-2.00	W: 1.50-2.50
X1CrNiMoCuN24-22-8	1.4652	0.020	0.50	2.00-4.0	0.030	0.005	23.0-25.0	7.0-8.0	21.0-23.0	0.45-0.55	0.30-0.60	654 SMO – Superaustenitic
X2CrNiMnMoN25-18-6-5	1.4565	0.030	1.00	5.0-7.0	0.030	0.015	24.0-26.0	4.0-5.0	16.0-19.0	0.30-0.60	–	Nb: 0.15
X1NiCrMoCu31-27-4	1.4563	0.02	0.50	1.50	0.025	0.010	26.0-28.0	3.00-4.0	30.0-32.0	–	1.00-2.00	Alloy 825 (Ni-based)
X1NiCrMoCu25-20-5	1.4539	0.02	0.50	2.00	0.030	0.015	19.0-21.0	4.0-5.0	24.0-26.0	–	1.20-2.00	904L (Ni-based)
X1NiCrMoCuN25-20-7	1.4529	0.02	0.50	2.00	0.025	0.010	19.0-21.0	6.0-7.0	24.0-26.0	0.15-0.25	1.20-2.00	Superaustenitic Ni-based

3. Austenitic-Ferritic (Duplex) Stainless Steels | Corrosion Resistant Steels

Steel Name	Steel Number	C max %	Si max %	Mn max %	P max %	S max %	Cr range %	Mo max %	Ni range %	N range %	Cu max %	Others
X2CrMnNiSiN20-5-4-2	1.4670	0.030	1.50-3.00	4.0-6.0	0.040	0.010	18.0-21.0	0.60	3.00-5.5	0.10-0.20	1.00	Patented*
X2CrNiMoSi18-5-3	1.4424	0.030	1.40-2.00	1.20-2.00	0.035	0.015	18.0-19.0	2.50-3.00	4.5-5.2	0.05-0.10	–	3RE60
X2CrNiMnMoCuN21-3-1-1	1.4637	0.015-0.030	0.30-0.50	1.05-1.30	0.035	0.05	19.9-20.3	1.15-1.30	2.65-3.00	0.18-0.21	0.30-0.50	Patented*
X2CrNiN23-4	1.4362	0.030	1.00	2.00	0.035	0.015	22.0-24.5	0.10-0.60	3.5-5.5	0.05-0.20	0.10-0.60	2304 lean duplex
X2CrMnNiN21-5-1	1.4162	0.04	1.00	4.0-6.0	0.040	0.015	21.0-22.0	0.10-0.80	1.35-1.90	0.20-0.25	0.10-0.80	LDX 2101
X2CrMnNiMoN21-5-3	1.4482	0.030	1.00	4.0-6.0	0.035	0.030	19.5-21.5	0.10-0.60	1.50-3.50	0.05-0.20	1.00	–
X2CrNiMoN22-5-3	1.4462	0.030	1.00	2.00	0.035	0.015	21.0-23.0	2.50-3.5	4.5-6.5	0.10-0.22	–	2205 standard duplex
X2CrNiMnMoCuN24-4-3-2	1.4662	0.030	0.70	2.50-4.0	0.035	0.005	23.0-25.0	1.00-2.00	3.00-4.5	0.20-0.30	0.10-0.80	Patented*
X2CrNiMoCuN25-6-3	1.4507	0.030	0.70	2.00	0.035	0.015	24.0-26.0	3.00-4.0	6.0-8.0	0.20-0.30	1.00-2.50	2507 superduplex
X3CrNiMoN27-5-2	1.4460	0.05	1.00	2.00	0.035	0.015	25.0-28.0	1.30-2.00	4.5-6.5	0.05-0.20	–	–
X2CrNiMoN25-7-4	1.4410	0.030	1.00	2.00	0.035	0.015	24.0-26.0	3.00-4.5	6.0-8.0	0.24-0.35	–	2507 superduplex
X2CrNiMoCuWN25-7-4	1.4501	0.030	1.00	1.00	0.035	0.015	24.0-26.0	3.00-4.0	6.0-8.0	0.20-0.30	0.50-1.00	W: 0.50-1.00, superduplex
X2CrNiMoN29-7-2	1.4477	0.030	0.50	0.80-1.50	0.030	0.015	28.0-30.0	1.50-2.60	5.8-7.5	0.30-0.40	0.80	Hyperduplex
X2CrNiMoCoN28-8-5-1	1.4658	0.030	0.50	1.50	0.035	0.010	26.0-29.0	4.0-5.0	5.5-9.5	0.30-0.50	1.00	Co: 0.50-2.00, hyperduplex

4. Ferritic Stainless Steels | Corrosion Resistant Steels

Steel Name	Steel Number	C max %	Si max %	Mn max %	P max %	S max %	Cr range %	Mo max %	Ni max %	N max %	Ti/Nb %	Others
X2CrTi12	1.4512	0.030	1.00	1.00	0.040	0.015	10.5-12.5	–	–	–	Ti: 6×(C+N)-0.65	409
X6CrNiTi12	1.4516	0.08	0.70	1.50	0.040	0.015	10.5-12.5	–	0.50-1.50	–	Ti: 0.05-0.35	–
X6Cr13	1.4000	0.08	1.00	1.00	0.040	0.015	12.0-14.0	–	–	–	–	410S
X6CrAl13	1.4002	0.08	1.00	1.00	0.040	0.015	12.0-14.0	–	–	–	–	Al: 0.10-0.30, 405
X2CrMnNiTi12	1.4600	0.030	1.00	1.00-2.50	0.040	0.015	11.0-13.0	–	0.30-1.00	0.025	Ti: 6×C-0.35	–
X2CrSiTi15	1.4630	0.030	0.20-1.50	1.00	0.050	0.050	13.0-16.0	0.50	0.50	–	Ti: 4×(C+N)+0.15-0.80	Al: 1.50
X1CrNb15	1.4595	0.020	1.00	1.00	0.025	0.015	14.0-16.0	–	–	0.020	Nb: 0.20-0.60	–
X6Cr17	1.4016	0.08	1.00	1.00	0.040	0.015	16.0-18.0	–	–	–	–	430
X2CrTi17	1.4520	0.025	0.50	0.50	0.040	0.015	16.0-18.0	–	–	0.015	Ti: 4×(C+N)+0.15-0.80	–
X3CrTi17	1.4510	0.05	1.00	1.00	0.040	0.015	16.0-18.0	–	–	–	Ti: 4×(C+N)+0.15-0.80	430Ti
X3CrNb17	1.4511	0.05	1.00	1.00	0.040	0.015	16.0-18.0	–	–	–	Nb: 12×C-1.00	430Nb
X2CrNbZr17	1.4590	0.030	1.00	1.00	0.040	0.015	16.0-17.5	–	–	–	Nb: 0.35-0.55, Zr≥7×(C+N)+0.15	–
X6CrNi17-1	1.4017	0.08	1.00	1.00	0.040	0.015	16.0-18.0	–	1.20-1.60	–	–	434
X2CrTiNb18	1.4509	0.030	1.00	1.00	0.040	0.015	17.5-18.5	–	–	–	Ti: 3×C+0.30-1.00, Nb: 0.10-0.60	439
X2CrAlSiNb18	1.4634	0.030	0.20-1.50	1.00	0.050	0.050	17.5-18.5	0.50	0.50	–	Nb: 3×C+0.30-1.00, Al: 0.20-1.50	–
X2CrNbTi20	1.4607	0.030	1.00	1.00	0.040	0.015	18.5-20.5	–	–	0.030	Nb: 1.00, Ti: 4×(C+N)+0.15-0.80	–
X2CrTi21	1.4611	0.030	1.00	1.00	0.050	0.050	19.0-22.0	0.50	0.50	–	Ti: 4×(C+N)+0.20-1.00, Al: 0.05	Patented*
X2CrNbCu21	1.4621	0.030	1.00	1.00	0.040	0.015	20.0-21.5	–	–	0.030	Nb: 0.20-1.00, Cu: 0.10-1.00	441
X2CrCuNbTiV22-1	1.4622	0.030	1.00	0.80	0.040	0.015	20.0-24.0	–	–	0.030	Nb: 0.10-0.70, Ti: 0.10-0.70, V: 0.03-0.50	Cu: 0.30-0.80, Pat*
X2CrTi24	1.4613	0.030	1.00	1.00	0.050	0.050	22.0-25.0	0.50	0.50	–	Ti: 4×(C+N)+0.20-1.00, Al: 0.05	Patented*
X5CrNiMoTi15-2	1.4589	0.08	1.00	1.00	0.040	0.015	13.5-15.5	0.20-1.20	1.00-2.50	–	Ti: 0.30-0.50	–
X6CrMoS17	1.4105	0.08	1.50	1.50	0.040	0.15-0.35	16.0-18.0	0.20-0.60	–	–	–	Free machining
X6CrMo17-1	1.4113	0.08	1.00	1.00	0.040	0.015	16.0-18.0	0.90-1.40	–	–	–	434
X2CrMoTi17-1	1.4513	0.025	1.00	1.00	0.040	0.015	16.0-18.0	0.80-1.40	–	0.020	Ti: 4×(C+N)+0.15-0.80	434
X6CrMoNb17-1	1.4526	0.08	1.00	1.00	0.040	0.015	16.0-18.0	0.80-1.40	–	0.040	Nb: 7×(C+N)+0.10-1.00	434
X2CrMoTi18-2	1.4521	0.025	1.00	1.00	0.040	0.015	17.0-20.0	1.75-2.50	–	0.030	Ti: 4×(C+N)+0.15-0.80	444
X2CrMoTiS18-2	1.4523	0.030	1.00	0.50	0.040	0.15-0.35	17.5-19.0	2.00-2.50	–	–	Ti: 4×(C+N)+0.15-0.80, (C+N)≤0.040	Free machining
X2CrMoSiS18-2-1	1.4106	0.030	2.50	1.00	0.040	0.15-0.35	17.5-19.5	1.50-2.50	0.75	–	–	Free machining
X6CrMoS19-2	1.4114	0.080	1.00	2.50	0.040	0.15-0.35	17.5-19.5	1.50-2.50	0.75	–	–	Free machining
X2CrMoTi29-4	1.4592	0.025	1.00	1.00	0.030	0.010	28.0-30.0	3.50-4.50	–	0.045	Ti: 4×(C+N)+0.15-0.80	Superferritic

5. Martensitic and Precipitation Hardening Stainless Steels | Corrosion Resistant Steels

Steel Name	Steel Number	C range %	Si max %	Mn max %	P max %	S max %	Cr range %	Mo range %	Ni range %	N max %	V %	Others
X15Cr13	1.4024	0.12-0.17	1.00	1.00	0.040	0.015	12.0-14.0	–	–	–	–	410
X20Cr13	1.4021	0.16-0.25	1.00	1.50	0.040	0.015	12.0-14.0	–	–	–	–	420
X30Cr13	1.4028	0.26-0.36	1.00	1.50	0.040	0.015	12.0-14.0	–	–	–	–	420
X29CrS13	1.4029	0.25-0.32	1.00	1.50	0.040	0.15-0.25	12.0-13.5	0.60	–	–	–	Free machining
X39Cr13	1.4031	0.36-0.42	1.00	1.00	0.040	0.015	12.5-14.5	–	–	–	–	420
X46Cr13	1.4034	0.43-0.50	1.00	1.00	0.040	0.015	12.5-14.5	–	–	–	–	420
X46CrS13	1.4035	0.43-0.50	1.00	2.00	0.040	0.15-0.35	12.5-14.0	–	–	–	–	Free machining
X65Cr13	1.4037	0.58-0.70	1.00	1.00	0.040	0.015	12.5-14.5	–	–	see note	–	440A, N content specified
X34CrN16	1.4060	0.29-0.38	1.00	1.00	0.040	0.015	15.0-16.5	–	–	0.13-0.22	–	C+N≥0.45, Cr+16N-5C≥16.2
X17CrNi16-2	1.4057	0.12-0.22	1.00	1.50	0.040	0.015	15.0-17.0	–	1.50-2.50	–	–	431
X38CrMo14	1.4419	0.36-0.42	1.00	1.00	0.040	0.015	13.0-14.5	0.60-1.00	–	–	–	–
X55CrMo14	1.4110	0.48-0.60	1.00	1.00	0.040	0.015	13.0-15.0	0.50-0.80	–	–	0.15	–
X3CrNiMo13-4	1.4313	0.05	0.70	1.50	0.040	0.015	12.0-14.0	0.30-0.70	3.5-4.5	≥0.020	–	Supermartensitic
X1CrNiMoCu12-5-2	1.4422	0.020	0.50	2.00	0.040	0.003	11.0-13.0	1.30-1.80	4.0-5.0	0.020	–	Cu: 0.20-0.80
X50CrMoV15	1.4116	0.35-0.55	1.00	1.00	0.040	0.015	14.0-15.5	0.50-0.80	–	see note	0.10-0.20	440C
X70CrMo15	1.4109	0.60-0.75	0.70	1.00	0.040	0.015	14.0-16.0	0.40-0.80	–	–	–	–
X2CrNiMoV13-5-2	1.4415	0.030	0.50	0.50	0.040	0.015	11.5-13.5	1.50-2.50	4.5-6.5	–	0.10-0.50	Ti: 0.010, Supermartensitic
X1CrNiMoCu12-7-3	1.4423	0.020	0.50	2.00	0.040	0.003	11.0-13.0	2.30-2.80	6.0-7.0	0.020	–	Cu: 0.20-0.80
X53CrSiMoVN16-2	1.4150	0.45-0.60	1.30-1.70	0.80	0.030	0.010	15.0-16.5	0.20-0.40	0.40	0.05-0.20	0.20-0.40	–
X4CrNiMo16-5-1	1.4418	0.06	0.70	1.50	0.040	0.015	15.0-17.0	0.80-1.50	4.0-6.0	≥0.020	–	–
X14CrMoS17	1.4104	0.10-0.17	1.00	1.50	0.040	0.15-0.35	15.5-17.5	0.20-0.60	–	–	–	Free machining
X39CrMo17-1	1.4122	0.33-0.45	1.00	1.50	0.040	0.015	15.5-17.5	0.80-1.30	1.00	–	–	–
X105CrMo17	1.4125	0.95-1.20	1.00	1.00	0.040	0.015	16.0-18.0	0.40-0.80	–	–	–	440C
X40CrMoVN16-2	1.4123	0.35-0.50	1.00	1.00	0.040	0.015	14.0-16.0	1.00-2.50	0.50	0.10-0.30	1.50	–
X90CrMoV18	1.4112	0.85-0.95	1.00	1.00	0.040	0.015	17.0-19.0	0.90-1.30	–	–	0.07-0.12	440C
X5CrNiCuNb16-4	1.4542	0.07	0.70	1.50	0.040	0.015	15.0-17.0	0.60	3.00-5.0	–	–	Nb: 5×C-0.45, Cu: 3.00-5.0, 17-4PH
X7CrNiAl17-7	1.4568	0.09	0.70	1.00	0.040	0.015	16.0-18.0	–	6.5-7.8	–	–	Al: 0.70-1.50, 17-7PH
X5CrNiMoCuNb14-5	1.4594	0.07	0.70	1.00	0.040	0.015	13.0-15.0	1.20-2.00	5.0-6.0	–	–	Nb: 0.15-0.60, Cu: 1.20-2.00
X1CrNiMoAlTi12-9-2	1.4530	0.015	0.10	0.10	0.010	0.005	11.5-12.5	1.85-2.15	8.5-9.5	0.010	–	Al: 0.60-0.80, Ti: 0.28-0.37
X1CrNiMoAlTi12-10-2	1.4596	0.015	0.10	0.10	0.010	0.005	11.5-12.5	1.85-2.15	9.2-10.2	0.020	–	Al: 0.80-1.10, Ti: 0.28-0.40
X1CrNiMoAlTi12-11-2	1.4612	0.015	0.10	0.10	0.010	0.005	11.0-12.5	1.75-2.25	10.2-11.3	0.010	–	Al: 1.35-1.75, Ti: 0.20-0.50
X5NiCrTiMoVB25-15-2	1.4606	0.08	1.00	1.00-2.00	0.025	0.015	13.0-16.0	1.00-1.50	24.0-27.0	–	0.10-0.50	B: 0.001-0.010, Al: 0.35, Ti: 1.90-2.30, A-286
X75CrMo14-3	1.4107	0.70-0.82	1.00	0.80	0.035	0.030	13.5-14.5	2.50-3.20	0.50	N≤0.11	0.25-0.35	440C type
X39CrMo17-1	1.4122	0.33-0.45	1.00	1.50	0.040	0.015	15.5-17.5	0.80-1.30	1.00	–	–	–
X12CrMoWVNbN10-1-1	1.4901	0.10-0.14	0.30	0.30-0.60	0.020	0.010	9.0-10.0	0.95-1.05	0.30	0.03-0.07	0.18-0.25	Nb: 0.04-0.09, W: 1.45-1.75, Grade 92

6. Austenitic Heat Resistant Stainless Steels | Corrosion Resistant Steels

Steel Name	Steel Number	C range %	Si max %	Mn max %	P max %	S max %	Cr range %	Mo max %	Ni range %	N max %	Ti/Nb %	Others
X10CrNiTi18-10	1.4541	0.04-0.12	1.00	2.00	0.045	0.015	17.0-19.0	–	9.0-12.0	–	Ti: 5×C-0.80	321
X10CrNiNb18-10	1.4961	0.04-0.12	1.00	2.00	0.045	0.015	17.0-19.0	–	9.0-12.0	–	Nb: 10×C-1.00	347
X10CrNiSi18-10	1.4826	0.05-0.15	1.00-2.00	2.00	0.045	0.030	17.0-20.0	0.80	8.0-11.0	–	–	–
X8CrNiNb16-13	1.4886	0.04-0.10	1.00	2.00	0.045	0.015	15.5-17.0	0.80	12.0-14.0	–	Nb: 10×C-1.00	–
X8CrNiTi18-10	1.4981	0.04-0.10	1.00	2.00	0.045	0.015	17.0-19.0	–	9.0-12.0	–	Ti: 5×C-0.80	–
X12CrNi23-13	1.4833	0.08-0.16	1.50	2.00	0.045	0.015	22.0-24.0	–	12.0-14.0	–	–	309
X15CrNiSi20-12	1.4828	0.10-0.20	1.50-2.50	2.00	0.045	0.015	19.0-21.0	–	11.0-13.0	–	–	309S
X15CrNiSi25-20	1.4841	0.10-0.20	1.50-2.50	2.00	0.045	0.015	24.0-26.0	–	19.0-22.0	–	–	310S
X15CrNiSi25-21	1.4857	0.10-0.20	1.50-2.50	2.00	0.045	0.015	24.0-26.0	–	20.0-22.0	–	–	310S
X10NiCrAlTi32-21	1.4876	0.05-0.15	1.50	2.00	0.045	0.015	19.0-22.0	–	31.0-34.0	–	Ti: 0.15-0.60	Al: 0.15-0.60
X8NiCrAlTi32-21	1.4958	0.05-0.12	1.00	2.00	0.030	0.015	19.0-22.0	–	31.0-35.0	–	Ti: 0.20-0.60	Al: 0.20-0.60
X6NiCrSiNCe35-25	1.4854	0.04-0.08	1.00-2.00	2.00	0.030	0.015	23.0-27.0	–	34.0-37.0	0.15-0.40	–	Ce: 0.03-0.08

7. Ferritic Heat Resistant Stainless Steels | Corrosion Resistant Steels

Steel Name	Steel Number	C range %	Si range %	Mn max %	P max %	S max %	Cr range %	Mo max %	Ni max %	N max %	Al range %	Others
X10CrAlSi18	1.4742	0.08-0.15	0.70-1.40	1.00	0.040	0.025	17.0-19.0	0.30	0.30	–	0.70-1.40	Ti: 8×(C+N)-0.80
X10CrAlSi25	1.4762	0.08-0.15	0.70-1.40	1.00	0.040	0.025	23.0-27.0	0.30	0.50	–	0.70-1.40	Ti: 8×(C+N)-0.80
X18CrN28	1.4749	0.08-0.20	0.80	1.00	0.040	0.015	27.0-30.0	–	–	0.15-0.30	–	–
X6CrAl13	1.4002	0.08	1.00	1.00	0.040	0.015	12.0-14.0	–	–	–	0.10-0.30	405 (also in Table 4)

8. Austenitic Creep Resistant Stainless Steels | Corrosion Resistant Steels

Steel Name	Steel Number	C range %	Si max %	Mn max %	P max %	S max %	Cr range %	Mo range %	Ni range %	N range %	Ti/Nb/B %	Others
X6CrNiNb18-10	1.4941	0.04-0.10	1.00	2.00	0.045	0.015	17.0-19.0	–	9.0-12.0	–	Nb: 10×C-1.00	347H
X6CrNiTiB18-10	1.4943	0.04-0.10	1.00	2.00	0.045	0.015	17.0-19.0	–	9.0-12.0	–	Ti: 5×C-0.70, B: 0.001-0.005	321HB
X6CrNiMoTi17-12-2	1.4912	0.04-0.10	1.00	2.00	0.045	0.015	16.0-18.0	2.00-2.50	11.0-14.0	–	Ti: 5×C-0.70	316Ti
X6CrNiMoNb17-12-2	1.4988	0.04-0.10	1.00	2.00	0.045	0.015	16.0-18.0	2.00-2.50	11.0-14.0	–	Nb: 10×C-1.00	316Nb
X6CrNiMoB17-12-2	1.4919	0.04-0.10	1.00	2.00	0.045	0.015	16.0-18.0	2.00-2.50	10.0-13.0	–	B: 0.001-0.005	316HB
X3CrNiMoBN17-13-3	1.4910	0.02-0.06	0.50	2.00	0.030	0.015	16.0-18.0	2.25-3.00	12.0-14.0	0.030-0.070	B: 0.001-0.010	–
X7CrNiMoBNb16-16	1.4986	0.04-0.10	0.50	2.00	0.030	0.015	15.5-17.0	1.00-1.50	16.0-18.0	–	Nb: 10×C-1.00, B: 0.003-0.009	–
X8CrNiMoVNb16-13	1.4988	0.05-0.10	0.50	2.00	0.030	0.015	15.0-17.0	1.00-1.50	13.0-15.0	–	Nb: 0.90-1.10	V: 0.20-0.35
X8CrNiMoNb16-16	1.4981	0.04-0.10	0.50	2.00	0.030	0.015	15.5-17.0	1.00-1.50	16.0-18.0	–	Nb: 10×C-1.00	–
X10CrNiCuNb18-9-3	1.4961	0.08-0.14	1.00	2.00	0.045	0.015	17.0-19.0	–	9.0-12.0	–	Nb: 8×C-1.00	Cu: 2.50-3.00
X11CrNiMoNbVB15-13-01	1.4982	0.08-0.14	0.50	2.00	0.030	0.015	14.5-16.0	0.80-1.20	12.5-14.0	–	Nb: 0.80-1.20, B: 0.002-0.008	V: 0.15-0.30
X3CrNiMnMoNbN21-9-5-2	1.4939	0.02-0.06	0.50	4.0-6.0	0.030	0.015	20.0-22.0	1.50-2.50	8.0-10.0	0.15-0.30	Nb: 0.30-0.60	–
X3CrNiMnMoNbN23-17-5-3	1.4964	0.02-0.06	0.50	4.0-6.0	0.030	0.015	22.0-24.0	2.50-3.00	16.0-18.0	0.15-0.30	Nb: 0.40-0.80	800H
X10NiCrAlTi32-20	1.4958	0.05-0.12	1.00	2.00	0.030	0.015	19.0-22.0	–	31.0-35.0	–	Ti: 0.20-0.60	Al: 0.20-0.60, 800HT
X10NiCrAlTiMoV33-16	1.4981	0.05-0.12	0.80	2.00	0.030	0.015	15.0-17.0	1.00-1.50	32.0-35.0	–	Ti: 1.80-2.40	Al: 0.80-1.40, V: 0.10-0.50
X6NiCrTiMoVB25-15-2	1.4980	0.04-0.08	1.00	1.00-2.00	0.025	0.015	14.0-16.0	1.00-1.50	24.0-27.0	–	Ti: 1.90-2.35, B: 0.001-0.010	Al: 0.40, V: 0.10-0.50, A-286
X1NiCrMoCu31-27-4	1.4563	0.02	0.50	1.50	0.025	0.010	26.0-28.0	3.00-4.0	30.0-32.0	–	–	Cu: 1.00-2.00, Alloy 825
X1NiCrMoCu25-20-5	1.4539	0.02	0.50	2.00	0.030	0.015	19.0-21.0	4.0-5.0	24.0-26.0	–	–	Cu: 1.20-2.00, 904L

9. Martensitic Creep Resistant Stainless Steels | Corrosion Resistant Steels

Steel Name	Steel Number	C range %	Si max %	Mn range %	P max %	S max %	Cr range %	Mo range %	Ni max %	V range %	Nb/W %	Others
X20CrMoV11-1	1.4922	0.17-0.23	0.50	0.30-0.60	0.025	0.010	10.0-12.5	0.90-1.10	0.30-0.80	0.25-0.35	–	Grade 22, P22
X19CrMoNbVN11-1	1.4913	0.15-0.22	0.20	0.50-1.00	0.020	0.010	10.0-11.5	0.70-1.00	0.30-0.70	0.20-0.30	Nb: 0.03-0.08	N: 0.02-0.08, Grade 23, P23
X12CrMoWVNbN10-1-1	1.4901	0.10-0.14	0.30	0.30-0.60	0.020	0.010	9.0-10.0	0.95-1.05	0.30	0.18-0.25	Nb: 0.04-0.09, W: 1.45-1.75	N: 0.03-0.07, Grade 92, P92
X10CrWMoVNb9-2	1.4901	0.07-0.14	0.40	0.30-0.60	0.020	0.010	8.50-9.50	0.30-0.60	0.15-0.25	0.15-0.25	Nb: 0.04-0.10, W: 1.50-2.00	N: 0.01-0.05, Grade 9
X12CrNiMoV12-3	1.4938	0.10-0.16	0.50	0.50-1.00	0.025	0.010	11.0-12.5	0.80-1.20	2.00-2.50	0.25-0.35	–	Turbine steel
X3CrNiMoBN17-13-3	1.4910	0.02-0.06	0.50	2.00	0.030	0.015	16.0-18.0	2.25-3.00	12.0-14.0	–	B: 0.001-0.010	N: 0.030-0.070 (also in Table 8)

EN 10088-2 Standard Guide

EN 10088-3 Standard Guide

MODULUS METAL
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