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S31277 Stainless Steel vs. ASTM A372 Grade K Steel

Both S31277 stainless steel and ASTM A372 grade K steel are iron alloys. They have 46% of their average alloy composition in common. There are 27 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 S31277 stainless steel and the bottom bar is ASTM A372 grade K steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 45
23
Fatigue Strength, MPa 380
440
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
73
Shear Strength, MPa 600
490
Tensile Strength: Ultimate (UTS), MPa 860
780
Tensile Strength: Yield (Proof), MPa 410
620

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
440
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 36
4.4
Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 6.7
1.8
Embodied Energy, MJ/kg 90
24
Embodied Water, L/kg 220
57

Common Calculations

PREN (Pitting Resistance) 51
2.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
160
Resilience: Unit (Modulus of Resilience), kJ/m3 410
1010
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29
27
Strength to Weight: Bending, points 25
24
Thermal Shock Resistance, points 19
23

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.18
Chromium (Cr), % 20.5 to 23
1.0 to 1.8
Copper (Cu), % 0.5 to 1.5
0
Iron (Fe), % 35.5 to 46.2
93.4 to 96.6
Manganese (Mn), % 0 to 3.0
0.1 to 0.4
Molybdenum (Mo), % 6.5 to 8.0
0.2 to 0.6
Nickel (Ni), % 26 to 28
2.0 to 3.3
Nitrogen (N), % 0.3 to 0.4
0
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0 to 0.5
0.15 to 0.35
Sulfur (S), % 0 to 0.010
0 to 0.010