AISI 301L Stainless Steel Material Data Sheet

Stainless steel, austenitic, AISI 301L, annealed

AISI 301L Stainless Steel General information

Designation
AISI 301L, wrought
Condition	Solution annealed
UNS number	S30103
US name	AISI 301L
EN name	X2CrNiN18-7
EN number	1.4318
JIS (Japanese) name	SUS301L

Composition

C (carbon)	0	–	0.03	%
Cr (chromium)	16	–	18	%
Fe (iron)	70.7	–	78	%
Mn (manganese)	0	–	2	%
N (nitrogen)	0	–	0.2	%
Ni (nickel)	6	–	8	%
P (phosphorus)	0	–	0.045	%
S (sulfur)	0	–	0.03	%
Si (silicon)	0	–	1	%

AISI 301L Stainless Steel Physical properties

Density

7.88

–

7.96

g/cm³

AISI 301L Stainless Steel Mechanical properties

Young’s modulus	200	–	210	GPa
Specific stiffness	25.3	–	26.6	MN.m/kg
Yield strength (elastic limit)	200	–	240	MPa
Tensile strength	503	–	556	MPa
Specific strength	25.3	–	30.3	kN.m/kg
Elongation	30	–	40	% strain
Compressive strength	159	–	200	MPa
Flexural modulus	200	–	210	GPa
Flexural strength (modulus of rupture)	179	–	207	MPa
Shear modulus	77	–	80.9	GPa
Poisson’s ratio	0.27	–	0.281
Shape factor	65
Hardness – Vickers	215	–	240	HV
Hardness – Rockwell B	85	–	100	HRB
Hardness – Rockwell C	15	–	21	HRC
Hardness – Brinell	165	–	241	HB
Elastic stored energy (springs)	262	–	653	kJ/m³
Fatigue strength at 10^7 cycles	229	–	253	MPa
Fatigue strength model (stress range) Parameters: Stress Ratio = -1, Number of Cycles = 1e7cycles	214	–	271	MPa

AISI 301L Stainless Steel Impact & fracture properties

Fracture toughness	55	–	69	MPa.m^0.5
Toughness (G)	14.9	–	23	kJ/m²

AISI 301L Stainless Steel Thermal properties

Melting point	1400	–	1420	°C
Maximum service temperature	840	–	870	°C
Minimum service temperature	-175			°C
Thermal conductivity	15.6	–	16.9	W/m.°C
Specific heat capacity	481	–	501	J/kg.°C
Thermal expansion coefficient	16.2	–	17	µstrain/°C
Thermal shock resistance	58.4	–	70.9	°C
Thermal distortion resistance	0.933	–	1.02	MW/m
Latent heat of fusion	376	–	454	kJ/kg

AISI 301L Stainless Steel Electrical properties

Electrical resistivity	65	–	77	µohm.cm
Electrical conductivity	2.24	–	2.65	%IACS
Galvanic potential	-0.19	–	-0.11	V

AISI 301L Stainless Steel Magnetic properties

Magnetic type

Non-magnetic

AISI 301L Stainless Steel Optical, aesthetic and acoustic properties

Transparency	Opaque
Acoustic velocity	5020	–	5160	m/s
Mechanical loss coefficient (tan delta)	6.7e-4	–	0.0013

AISI 301L Stainless Steel Processing properties

Metal casting	Unsuitable
Metal cold forming	Acceptable
Metal hot forming	Limited use
Metal press forming	Acceptable
Metal deep drawing	Limited use
Machining speed	23.5 m/min
Weldability Notes: Preheating and post weld heat treatments are not required	Excellent
Weldability – MIG	Excellent
Weldability – plasma	Excellent
Weldability – SAW	Excellent
Weldability – TIG	Excellent
Brazeability	Fair
Carbon equivalency	0.863

AISI 301L Stainless Steel Durability

Water (fresh)	Excellent
Water (salt)	Excellent
Weak acids	Excellent
Strong acids	Excellent
Weak alkalis	Excellent
Strong alkalis	Excellent
Organic solvents	Excellent
Oxidation at 500C	Excellent
UV radiation (sunlight)	Excellent
Galling resistance (adhesive wear) Notes: Aluminum bronze is the most suitable mating material to minimize galling.	Limited use
Flammability	Non-flammable

AISI 301L Stainless Steel Corrosion resistance

Pitting resistance equivalent number (PREN)	16 – 21.2
Pitting and crevice corrosion	Low (<20)
Stress corrosion cracking Note: Rated in chloride; Other susceptible environments: Hydrogen sulfide	Slightly susceptible
Intergranular (weld line) corrosion	Good
Inorganic acids	Moderate
Organic acids	Moderate
Alkalis	Moderate
Humidity / water	Excellent
Sea water	Moderate
Sour oil and gas	Restricted

AISI 301L Stainless Steel Standards with similar compositions-Equivalent Grades

International: X2CrNiN18-7 to ISO 9328-7

Japan: SUS301L to JIS G4304, SUS301L to JIS G4305

South Korea: STS301L to KS D 3698, STS301L to KS D 3705

UK: X2CrNiN18-7 to BS EN 10088-1, X2CrNiN18-7 to BS EN 10088-2, X2CrNiN18-7 to BS EN 10296-2, X5CrNi17-7 to BS EN 10088-1, X5CrNi17-7 to BS EN 10088-2, X5CrNi17-7 to BS EN 10088-3

USA: S30103 to ASTM A240/A240M, S30103 to ASTM A666, S30103 to ASTM A959, S30153 to ASTM A240/A240M, S30153 to ASTM A666, S30153 to ASTM A959, UNS S30103, UNS S30153

Tradenames: ALZ 301LN, UGINOX 18-7 L