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ASTM A387 Grade 2 Steel vs. S35125 Stainless Steel

Both ASTM A387 grade 2 steel and S35125 stainless steel are iron alloys. They have 43% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 2 steel and the bottom bar is S35125 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25
39
Fatigue Strength, MPa 190 to 250
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Shear Strength, MPa 300 to 350
370
Tensile Strength: Ultimate (UTS), MPa 470 to 550
540
Tensile Strength: Yield (Proof), MPa 260 to 350
230

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 420
1100
Melting Completion (Liquidus), °C 1470
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
12
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
36
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 1.6
6.4
Embodied Energy, MJ/kg 20
89
Embodied Water, L/kg 50
210

Common Calculations

PREN (Pitting Resistance) 2.4
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 120
170
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 320
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16 to 20
19
Strength to Weight: Bending, points 17 to 19
18
Thermal Diffusivity, mm2/s 12
3.1
Thermal Shock Resistance, points 14 to 16
12

Alloy Composition

Carbon (C), % 0.050 to 0.21
0 to 0.1
Chromium (Cr), % 0.5 to 0.8
20 to 23
Iron (Fe), % 97.1 to 98.3
36.2 to 45.8
Manganese (Mn), % 0.55 to 0.8
1.0 to 1.5
Molybdenum (Mo), % 0.45 to 0.6
2.0 to 3.0
Nickel (Ni), % 0
31 to 35
Niobium (Nb), % 0
0.25 to 0.6
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0.15 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.015