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ASTM A182 Grade F122 vs. S31727 Stainless Steel

Both ASTM A182 grade F122 and S31727 stainless steel are iron alloys. They have 71% of their average alloy composition in common. There are 29 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 A182 grade F122 and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 23
40
Fatigue Strength, MPa 320
240
Poisson's Ratio 0.28
0.28
Reduction in Area, % 45
56
Shear Modulus, GPa 76
78
Shear Strength, MPa 450
430
Tensile Strength: Ultimate (UTS), MPa 710
630
Tensile Strength: Yield (Proof), MPa 450
270

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Mechanical, °C 600
1010
Melting Completion (Liquidus), °C 1490
1440
Melting Onset (Solidus), °C 1440
1390
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 12
24
Density, g/cm3 8.0
8.0
Embodied Carbon, kg CO2/kg material 3.0
4.7
Embodied Energy, MJ/kg 44
64
Embodied Water, L/kg 100
180

Common Calculations

PREN (Pitting Resistance) 17
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
200
Resilience: Unit (Modulus of Resilience), kJ/m3 520
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25
22
Strength to Weight: Bending, points 22
20
Thermal Shock Resistance, points 19
14

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Boron (B), % 0 to 0.0050
0
Carbon (C), % 0.070 to 0.14
0 to 0.030
Chromium (Cr), % 10 to 11.5
17.5 to 19
Copper (Cu), % 0.3 to 1.7
2.8 to 4.0
Iron (Fe), % 81.3 to 87.7
53.7 to 61.3
Manganese (Mn), % 0 to 0.7
0 to 1.0
Molybdenum (Mo), % 0.25 to 0.6
3.8 to 4.5
Nickel (Ni), % 0 to 0.5
14.5 to 16.5
Niobium (Nb), % 0.040 to 0.1
0
Nitrogen (N), % 0.040 to 0.1
0.15 to 0.21
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 1.5 to 2.5
0
Vanadium (V), % 0.15 to 0.3
0
Zirconium (Zr), % 0 to 0.010
0