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S31727 Stainless Steel vs. ASTM A372 Grade G Steel

Both S31727 stainless steel and ASTM A372 grade G steel are iron alloys. They have 59% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is S31727 stainless steel and the bottom bar is ASTM A372 grade G steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
200 to 280
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
20 to 22
Fatigue Strength, MPa 240
310 to 380
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Shear Strength, MPa 430
410 to 570
Tensile Strength: Ultimate (UTS), MPa 630
650 to 910
Tensile Strength: Yield (Proof), MPa 270
430 to 550

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1010
410
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 24
2.2
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 4.7
1.5
Embodied Energy, MJ/kg 64
20
Embodied Water, L/kg 180
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
130 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 190
500 to 810
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
23 to 32
Strength to Weight: Bending, points 20
21 to 27
Thermal Shock Resistance, points 14
19 to 27

Alloy Composition

Carbon (C), % 0 to 0.030
0.25 to 0.35
Chromium (Cr), % 17.5 to 19
0.4 to 0.65
Copper (Cu), % 2.8 to 4.0
0
Iron (Fe), % 53.7 to 61.3
97.4 to 98.4
Manganese (Mn), % 0 to 1.0
0.7 to 1.0
Molybdenum (Mo), % 3.8 to 4.5
0.15 to 0.25
Nickel (Ni), % 14.5 to 16.5
0
Nitrogen (N), % 0.15 to 0.21
0
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.010