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EN 1.3956 Stainless Steel vs. ASTM A372 Grade M Steel

Both EN 1.3956 stainless steel and ASTM A372 grade M steel are iron alloys. They have 63% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.3956 stainless steel and the bottom bar is ASTM A372 grade M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 27
18 to 21
Fatigue Strength, MPa 240
450 to 520
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 650
810 to 910
Tensile Strength: Yield (Proof), MPa 330
660 to 770

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1080
450
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 22
5.0
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 4.8
2.0
Embodied Energy, MJ/kg 68
27
Embodied Water, L/kg 180
61

Common Calculations

PREN (Pitting Resistance) 34
3.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
160
Resilience: Unit (Modulus of Resilience), kJ/m3 270
1140 to 1580
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 23
29 to 32
Strength to Weight: Bending, points 21
24 to 27
Thermal Shock Resistance, points 18
24 to 27

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.23
Chromium (Cr), % 20.5 to 23.5
1.5 to 2.0
Iron (Fe), % 51.9 to 62.1
92.5 to 95.1
Manganese (Mn), % 4.0 to 6.0
0.2 to 0.4
Molybdenum (Mo), % 1.5 to 3.0
0.4 to 0.6
Nickel (Ni), % 11.5 to 13.5
2.8 to 3.9
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.3
Sulfur (S), % 0 to 0.030
0 to 0.010
Vanadium (V), % 0.1 to 0.3
0 to 0.080