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EN 1.4971 Stainless Steel vs. ASTM A372 Grade G Steel

Both EN 1.4971 stainless steel and ASTM A372 grade G steel are iron alloys. They have a modest 33% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4971 stainless steel and the bottom bar is ASTM A372 grade G steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
200 to 280
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
20 to 22
Fatigue Strength, MPa 270
310 to 380
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 530
410 to 570
Tensile Strength: Ultimate (UTS), MPa 800
650 to 910
Tensile Strength: Yield (Proof), MPa 340
430 to 550

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
410
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
46
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Base Metal Price, % relative 70
2.2
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 7.6
1.5
Embodied Energy, MJ/kg 110
20
Embodied Water, L/kg 300
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
130 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 280
500 to 810
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
23 to 32
Strength to Weight: Bending, points 23
21 to 27
Thermal Diffusivity, mm2/s 3.4
13
Thermal Shock Resistance, points 19
19 to 27

Alloy Composition

Carbon (C), % 0.080 to 0.16
0.25 to 0.35
Chromium (Cr), % 20 to 22.5
0.4 to 0.65
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
97.4 to 98.4
Manganese (Mn), % 0 to 2.0
0.7 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0.15 to 0.25
Nickel (Ni), % 19 to 21
0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.015
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.015
0 to 0.010
Tungsten (W), % 2.0 to 3.0
0