Table 1 — Chemical composition of austenitic cast irons — Engineering grades
| Graphite form | Material designation | Chemical composition in % (mass fraction) | |||||||
| Symbol | Number | C | Si | Mn | Ni | Cr | P | Cu | |
| Flake | EN-GJLA-XNiCuCr15-6-2 | 5.1500 | max. 3,0 | 1,0 to 2,8 | 0,5 to 1,5 | 13,5 to 17,5 | 1,0 to 3,5 | max. 0,25 | 5,5 to 7,5 |
| Spheroidal | EN-GJSA-XNiCr20-2 | 5.3500 | max. 3,0 | 1,5 to 3,0 | 0,5 to 1,5 | 18,0 to 22,0 | 1,0 to 3,5 | max. 0,08 | max. 0,50 |
| EN-GJSA-XNiMn23-4 | 5.3501 | max. 2,6 | 1,5 to 2,5 | 4,0 to 4,5 | 22,0 to 24,0 | max. 0,2 | max. 0,08 | max. 0,50 | |
| EN-GJSA-XNiCrNb20-2 a | 5.3502 a | max. 3,0 | 1,5 to 2,4 | 0,5 to 1,5 | 18,0 to 22,0 | 1,0 to 3,5 | max. 0,08 | max. 0,50 | |
| EN-GJSA-XNi22 | 5.3503 | max. 3,0 | 1,0 to 3,0 | 1,5 to 2,5 | 21,0 to 24,0 | max. 0,5 | max. 0,08 | max. 0,50 | |
| EN-GJSA-XNi35 | 5.3504 | max. 2,4 | 1,5 to 3,0 | 0,5 to 1,5 | 34,0 to 36,0 | max. 0,2 | max. 0,08 | max. 0,50 | |
| EN-GJSA-XNiSiCr35-5-2 | 5.3505 | max. 2,0 | 4,0 to 6,0 | 0,5 to 1,5 | 34,0 to 36,0 | 1,5 to 2,5 | max. 0,08 | max. 0,50 | |
| a Good weldability of this material with: % Nb ≤ [0,353 – 0,032 (% Si + 64 × % Mg)]. The normal range of Nb is 0,12 % to 0,20 %. | |||||||||
Table 2 — Chemical composition of austenitic cast irons — Special purpose grades
| Graphite form | Material designation | Chemical composition in % (mass fraction) | |||||||
| Symbol | Number | C | Si | Mn | Ni | Cr | P | Cu | |
| Flake | EN-GJLA-XNiMn13-7 | 5.1501 | max. 3,0 | 1,5 to 3,0 | 6,0 to 7,0 | 12,0 to 14,0 | max. 0,2 | max. 0,25 | max. 0,5 |
| Spheroidal | EN-GJSA-XNiMn13-7 | 5.3506 | max. 3,0 | 2,0 to 3,0 | 6,0 to 7,0 | 12,0 to 14,0 | max. 0,2 | max. 0,08 | max. 0,5 |
| EN-GJSA-XNiCr30-3 | 5.3507 | max. 2,6 | 1,5 to 3,0 | 0,5 to 1,5 | 28,0 to 32,0 | 2,5 to 3,5 | max. 0,08 | max. 0,5 | |
| EN-GJSA-XNiSiCr30-5-5 | 5.3508 | max. 2,6 | 5,0 to 6,0 | 0,5 to 1,5 | 28,0 to 32,0 | 4,5 to 5,5 | max. 0,08 | max. 0,5 | |
| EN-GJSA-XNiCr35-3 | 5.3509 | max. 2,4 | 1,5 to 3,0 | 0,5 to 1,5 | 34,0 to 36,0 | 2,0 to 3,0 | max. 0,08 | max. 0,5 | |
Table 3 — Mechanical properties measured at (23 ±5) °C on test pieces machined from cast samples of austenitic spheroidal graphite cast irons — Grades with specified minimum impact energy
| Graphite form | Material designation | 0,2 proof strength Rp0,2 MPa min. | Tensile strength Rm MPa min. | Elongation A % min. | Mean value of impact energy of 3 tests V-notch Charpy J min. | |
| Symbol | Number | |||||
| Spheroidal | EN-GJSA-XNiCr20-2 | 5.3500 | 210 | 370 | 7 | 13 a |
| EN-GJSA XNiMn23-4 | 5.3501 | 210 | 440 | 25 | 24 | |
| EN-GJSA-XNiCrNb20-2 | 5.3502 | 210 | 370 | 7 | 13 a | |
| EN-GJSA-XNi22 | 5.3503 | 170 | 370 | 20 | 20 | |
| EN-GJSA-XNi35 | 5.3504 | 210 | 370 | 20 | 13 a | |
| EN-GJSA-XNiSiCr35-5-2 | 5.3505 | 200 | 370 | 10 | 7 a | |
| EN-GJSA-XNiMn13-7 | 5.3506 | 210 | 390 | 15 | 16 | |
| a Optional requirement by agreement between the manufaturer and the purchaser. | ||||||
Table 4 — Mechanical properties at (23 ±5) °C measured on test pieces machined from cast samples of austenitic cast irons — Grey iron grades and spheroidal graphite cast iron grades without specified minimum impact energy
| Graphite form | Material designation | 0,2 % proof strength Rp0,2 MPa min. | Tensile strength Rm MPa min. | Elongation A % min | |
| Symbol | Number | ||||
| Flake | EN-GJLA-XNiMn13-7 | 5.1501 | — | 140 | — |
| EN-GJLA-XNiCuCr15-6-2 | 5.1500 | — | 170 | — | |
| Spheroidal | EN-GJSA-XNiCr30-3 | 5.3507 | 210 | 370 | 7 |
| EN-GJSA-XNiSiCr30-5-5 | 5.3508 | 240 | 390 | — | |
| EN-GJSA-XNiCr35-3 | 5.3509 | 210 | 370 | 7 | |
Properties and Applications of the Austenitic Cast Iron Grades
| Material designation | Properties | Applications | |
| Symbol | Number | ||
| Engineering grades Engineering grades | |||
| EN-GJLA-XNiCuCr15-6-2 | 5.1500 | Good corrosion resistance, particularly to alkalis, dilute acids, sea water and salt solutions; improved heat resistance, good bearing properties, high expansion coefficient, non-magnetisable with low chromium content. | Pumps, valves, furnace components, bushings, piston rings for light metal alloy pistons, non-magnetisable castings. |
| EN-GJSA-XNiCr20-2 | 5.3500 | Good corrosion and heat resistance. Good bearing properties, high coefficient of thermal expansion. Non-magnetisable with low chromium content. Increased high temperature resistance if 1 % Mo (mass fraction) is added. | Pumps, valves, compressors, bushings, turbocharger housings, exhaust gas manifolds, non-magnetisable castings. |
| EN-GJSA-XNiMn23-4 | 5.3501 | Particularly high ductility. Remains tough down to – 196 °C. Non-magnetisable. | Castings for refrigeration engineering for use down to – 196 °C. |
| EN-GJSA-XNiCrNb20-2 | 5.3502 | Suitable for production welding, the other properties being as for EN-GJSA-XNiCr20-2 (5.3500). | As for EN-GJSA-XNiCr20-2 (5.3500). |
| EN-GJSA-XNi22 | 5.3503 | High ductility. Lower corrosion and heat resistance than EN-GJSA-XNiCr20-2 (5.3500). High expansion coefficient. Remains tough down to – 100 °C. Non-magnetisable. | Pumps, valves, compressors, bushings, turbocharger housings. Exhaust gas manifolds, non-magnetisable castings. |
| EN-GJSA-XNi35 | 5.3504 | Lowest thermal expansion of all cast irons. Resistant to thermal shock. | Parts with dimensional stability for machine tools, scientific instruments. Moulds for glass. |
| EN-GJSA-XNiSiCr35-5-2 | 5.3505 | Specially heat resistant. Higher ductility and higher creep strength than EN-GJSA-XNiCr35-3 (5.3509). | Gas turbine housing parts, exhaust gas manifolds, turbocharger housings. |
| Special purpose grades | |||
| EN-GJLA-XNiMn13-7 | 5.1501 | Non-magnetisable. | Non-magnetisable castings, e.g. pressure covers for turbine generator sets, housings for switchgear, insulator flanges, terminals, ducts. |
| EN-GJSA-XNiMn13-7 | 5.3506 | Non-magnetisable, similar to EN-GJLA-XNiMn13-7 (5.1501) but with improved mechanical properties. | Non-magnetisable castings, e.g. covers for turbine generator sets, housings for switchgear, insulator flanges, terminals, ducts. |
| EN-GJSA-XNiCr30-3 | 5.3507 | Mechanical properties similar to EN-GJSA-XNiCrNb20-2 (5.3502), but better corrosion and heat resistance, intermediate expansion coefficient, particularly resistant to thermal shock and good high temperature resistance when 1 % Mo (mass fraction) is added. | Pumps, boilers, valves, filter parts, exhaust gas manifolds, turbocharger housings. |
| EN-GJSA-XNiSiCr30-5-5 | 5.3508 | Particularly high corrosion, erosion and heat resistance. Intermediate expansion coefficient. | Pumps, fittings, exhaust gas manifolds, turbocharger housings, castings for industrial furnaces. |
| EN-GJSA-XNiCr35-3 | 5.3509 | Similar to EN-GJSA-XNi35 (5.3504) but with improved high temperature resistance particularly when 1 % Mo (mass fraction) is added. | Gas turbine housing parts. Moulds for glass. |
Comparison of austenitic cast iron material designations according to EN 1560 and ISO/TR 15931
Material designations of austenitic cast irons
| EN 13835:2011 | EN 13835:2002 | ISO 2892 | |
| Symbol | Number | Number | Material designation |
| EN-GJLA-XNiCuCr15-6-2 | 5.1500 | EN-JL3011 | ISO 2892/JLA/XNiCuCr15-6-2 |
| EN-GJLA-XNiMn13-7 | 5.1501 | EN-JL3021 | ISO 2892/JLA/XNiMn13-7 |
| EN-GJSA-XNiCr20-2 | 5.3500 | EN-JS3011 | ISO 2892/JSA/XNiCr20-2 |
| EN-GJSA-XNiMn23-4 | 5.3501 | EN-JS3021 | ISO 2892/JSA/XNiMn23-4 |
| EN-GJSA-XNiCrNb20-2 | 5.3502 | EN-JS3031 | ISO 2892/JSA/XNiCrNb20-2 |
| EN-GJSA-XNi22 | 5.3503 | EN-JS3041 | ISO 2892/JSA/XNi22 |
| EN-GJSA-XNi35 | 5.3504 | EN-JS3051 | ISO 2892/JSA/XNi35 |
| EN-GJSA-XNiSiCr35-5-2 | 5.3505 | EN-JS3061 | ISO 2892/JSA/XNiSiCr35-5-2 |
| EN-GJSA-XNiMn13-7 | 5.3506 | EN-JS3071 | ISO 2892/JSA/XNiMn13-7 |
| EN-GJSA-XNiCr30-3 | 5.3507 | EN-JS3081 | ISO 2892/JSA/XNiCr30-3 |
| EN-GJSA-XNiSiCr30-5-5 | 5.3508 | EN-JS3091 | ISO 2892/JSA/XNiSiCr30-5-5 |
| EN-GJSA-XNiCr35-3 | 5.3509 | EN-JS3101 | ISO 2892/JSA/XNiCr35-3 |
Typical Mechanical Properties at (23 ± 5) °C of Austenitic Cast Irons
| Grade | Material designation | 0,2 % proof strength Rpo,2 MPa | Tensile strength Rm MPa | Elongation A % | Compression strength MPa | Charpy V impact energy value J | Modulus of elasticity E GPa | BrineII hardness HBW | |
| Symbol | Number | ||||||||
| Engineering | EN-GJLA-XNiCuCr15-6-2 | 5.1500 | – | 170 to 210 | 2 | 700 to 840 | – | 85 to 105 | 120 to 215 |
| EN-GJSA-XNiCr20-2 | 5.3500 | 210 to 250 | 370 to 480 | 7 to 20 | – | 11 to 24 | 112 to 130 | 140 to 255 | |
| EN-GJSA-XNiMn23-4 | 5.3501 | 210 to 240 | 440 to 480 | 25 to 45 | – | 20 to 30 | 120 to 140 | 150 to 180 | |
| EN-GJSA-XNiCrNb20-2 | 5.3502 | 210 to 250 | 370 to 480 | 8 to 20 | – | 11 to 24 | 112 to 130 | 140 to 200 | |
| EN-GJSA-XNi22 | 5.3503 | 170 to 250 | 370 to 450 | 20 to 40 | – | 17 to 29 | 85 to 112 | 130 to 170 | |
| EN-GJSA-XNi35 | 5.3504 | 210 to 240 | 370 to 420 | 20 to 40 | – | 10 to 18 | 112 to 140 | 130 to 180 | |
| EN-GJSA-XNiSiCr35-5-2 | 5.3505 | 200 to 270 | 370 to 500 | 10 to 20 | – | 7 to 12 | 130 to 150 | 130 to 170 | |
| Special purpose | EN-GJLA-XNiMn 13-7 | 5.1501 | – | 140 to 220 | – | 630 to 840 | – | 70 to 90 | 120 to 150 |
| EN-GJSA-XNiMn13-7 | 5.3506 | 210 to 260 | 390 to 470 | 15 to 18 | – | 15 to 25 | 140 to 150 | 120 to 150 | |
| EN-GJSA-XNiCr30-3 | 5.3507 | 210 to 260 | 370 to 480 | 7 to 18 | – | 5 | 92 to 105 | 140 to 200 | |
| EN-GJSA-XNiSiCr30-5-5 | 5.3508 | 240 to 310 | 390 to 500 | 1 to 4 | – | 1 to 3 | 90 | 170 to 250 | |
| EN-GJSA-XNiCr35-3 | 5.3509 | 210 to 290 | 370 to 450 | 7 to 10 | – | 4 | 112 to 123 | 140 to 190 | |
Typical Physical Properties of Austenitic Cast Irons
| Grade | Material designation | Mass density ρ kg/dm3 | Linear expansion coefficient (between 20 °c and 200 °C) α; µm/(m · K) | Thermal conductivity λ W/(m · K) | Specific heat capacity c J/(g .K) | Resistivity µΩ .m | Permeability (where H = 79,58 A/cm) | |
| Symbol | Number | |||||||
| Engineering | EN-GJLA-XNiCuCr15-6-2 | 5.1500 | 7,3 | 18,7 | 39,00 | 46 to 50 | 1,6 | 1,03 |
| EN-GJSA-XNiCr20-2 | 5.3500 | 7,4 to 7,45 | 18,7 | 12,60 | 46 to 50 | 1,0 | 1,05 | |
| EN-GJSA-XNiMn23-4 | 5.3501 | 7,45 | 14,7 | 12,60 | 46 to 50 | – | 1,02 | |
| EN-GJSA-XNiCrNb20-2 | 5.3502 | 7,40 | 18,7 | 12,60 | 46 to 50 | 1,0 | 1,04 | |
| EN-GJSA-XNi22 | 5.3503 | 7,40 | 18,40 | 12,60 | 46 to 50 | 1,0 | 1,02 | |
| EN-GJSA-XNi35 | 5.3504 | 7,60 | 5,0 | 12,60 | 46 to 50 | – | – | |
| EN-GJSA-XNiSiCr35-5-2 | 5.3505 | 7,45 | 15,10 | 12,60 | 46 to 50 | – | – | |
| Special purpose | EN-GJLA-XNiMn13-7 | 5.1501 | 7,40 | 17,70 | 39,00 | 46 to 50 | 1,2 | 1,02 |
| EN-GJSA-XNiMn13-7 | 5.3506 | 7,30 | 18,20 | 12,60 | 46 to 50 | 1,0 | 1,02 | |
| EN-GJSA-XNiCr30-3 | 5.3507 | 7,45 | 12,60 | 12,60 | 46 to 50 | – | – | |
| EN-GJSA-XNiSiCr30-5-5 | 5.3508 | 7,45 | 14,40 | 12,60 | 46 to 50 | – | 1,10 | |
| EN-GJSA-XNiCr35-3 | 5.3509 | 7,70 | 5,0 | 12,60 | 46 to 50 | – | – | |
Typical values for low temperature mechanical properties of EN-GJSA-XNiMn23-4 (5.3501)
| Temperature °C | 0,2 % proof strength Rp0,2 MPa | Tensile strength Rm MPa | Elongation A % | Reduction in area after fracture % | Charpy V impact energy value J |
| + 20 | 220 | 450 | 35 | 32 | 29 |
| 0 | 240 | 450 | 35 | 32 | 31 |
| -50 | 260 | 460 | 38 | 35 | 32 |
| – 100 | 300 | 490 | 40 | 37 | 34 |
| – 150 | 350 | 530 | 38 | 35 | 33 |
| – 183 | 430 | 580 | 33 | 27 | 29 |
| – 196 | 450 | 620 | 27 | 25 | 27 |
Typical values for mechanical properties of spheroidal graphite austenitic cast iron grades at elevated temperatures
| Property | Unit | Temperature °C | Engineering | Special purpose | |||
| EN-GJSA-XNiCr20-2 (5.3500) EN-GJSA-XNiCrNb20-2 (5.3502) | EN-GJSA-XNi22 (5.3503) | EN-GJSA-XNiCr30-3 (5.3507) | EN-GJSA-XNiSiCr30-5-5 (5.3508) | EN-GJSA-XNiCr35-3 (5.3509) | |||
| 0,2 % proof strengthRp0,2 | MPa | 20 430 540 650 760 | 246 197 197 176 119 | 240 184 165 170 117 | 276 — 199 193 107 | 312 — 291 239 130 | 288 — 181 170 131 |
| Tensile strengthRm | MPa | 20 430 540 650 760 | 417 380 335 250 155 | 437 368 295 197 121 | 410 — 337 293 186 | 450 — 426 337 153 | 427 — 332 286 175 |
| Elongation (accelerated test) | % | 20 430 540 650 760 | 10,5 12 10,5 10,5 15 | 35 23 19 10 13 | 7,5 — 7,5 7 18 | 3,5 — 4 11 30 | 7 — 9 6,5 24,5 |
| Creep strength (1 000 h) | MPa | 540 595 650 705 760 | 197 (127) 84 (60) (39) | 148 (95) 63 (42) (28) | — 165 (105) 68 (42) | — 120 (67) 44 (21) | — 176 (105) 70 (39) |
| Stress required to reach a minimum creep rate of 1 % per 1 000 h | MPa | 540 595 650 705 | 162 (92) 56 (34) | 91 (63) 40 (24) | — — — — | — — — — | (190) (112) (67) 56 |
| Stress required to reach a minimum creep rate of 1 % per 10 000 h | MPa | 540 595 650 705 | 63 (39) 24 (15) | — — — — | — — — — | — — — — | — 70 — 39 |
| Creep elongation (1 000 h) | % | 540 595 650 705 | 6 — 13 — | 14 — 13 — | — 7 — 12,5 | — 10,5 — 25 | — 6,5 — 13,5 |
| NOTE The values in brackets are interpolated or extrapolated. | |||||||
MODULUS METAL
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