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S64512 Stainless Steel vs. S31730 Stainless Steel

Both S64512 stainless steel and S31730 stainless steel are iron alloys. They have 74% of their average alloy composition in common. There are 29 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 S64512 stainless steel and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 330
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
40
Fatigue Strength, MPa 540
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 700
370
Tensile Strength: Ultimate (UTS), MPa 1140
540
Tensile Strength: Yield (Proof), MPa 890
200

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 750
990
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 10
16

Otherwise Unclassified Properties

Base Metal Price, % relative 10
24
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 3.3
4.6
Embodied Energy, MJ/kg 47
63
Embodied Water, L/kg 110
180

Common Calculations

PREN (Pitting Resistance) 18
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
170
Resilience: Unit (Modulus of Resilience), kJ/m3 2020
99
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 40
19
Strength to Weight: Bending, points 31
18
Thermal Shock Resistance, points 42
12

Alloy Composition

Carbon (C), % 0.080 to 0.15
0 to 0.030
Chromium (Cr), % 11 to 12.5
17 to 19
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 80.6 to 84.7
52.4 to 61
Manganese (Mn), % 0.5 to 0.9
0 to 2.0
Molybdenum (Mo), % 1.5 to 2.0
3.0 to 4.0
Nickel (Ni), % 2.0 to 3.0
15 to 16.5
Nitrogen (N), % 0.010 to 0.050
0 to 0.045
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.010
Vanadium (V), % 0.25 to 0.4
0