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ASTM A387 Grade 12 Steel vs. S32615 Stainless Steel

Both ASTM A387 grade 12 steel and S32615 stainless steel are iron alloys. They have 55% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 12 steel and the bottom bar is S32615 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 160
170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 25
28
Fatigue Strength, MPa 190 to 230
180
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 300 to 330
400
Tensile Strength: Ultimate (UTS), MPa 470 to 520
620
Tensile Strength: Yield (Proof), MPa 260 to 310
250

Thermal Properties

Latent Heat of Fusion, J/g 250
370
Maximum Temperature: Mechanical, °C 430
990
Melting Completion (Liquidus), °C 1470
1350
Melting Onset (Solidus), °C 1420
1310
Specific Heat Capacity, J/kg-K 470
500
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
24
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 1.6
4.4
Embodied Energy, MJ/kg 21
63
Embodied Water, L/kg 51
170

Common Calculations

PREN (Pitting Resistance) 2.7
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 110
140
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 250
160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 16 to 18
23
Strength to Weight: Bending, points 17 to 18
21
Thermal Shock Resistance, points 14 to 15
15

Alloy Composition

Carbon (C), % 0.050 to 0.17
0 to 0.070
Chromium (Cr), % 0.8 to 1.2
16.5 to 19.5
Copper (Cu), % 0
1.5 to 2.5
Iron (Fe), % 97 to 98.2
46.4 to 57.9
Manganese (Mn), % 0.4 to 0.65
0 to 2.0
Molybdenum (Mo), % 0.45 to 0.6
0.3 to 1.5
Nickel (Ni), % 0
19 to 22
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0.15 to 0.4
4.8 to 6.0
Sulfur (S), % 0 to 0.025
0 to 0.030