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EN 1.6570 Steel vs. S31730 Stainless Steel

Both EN 1.6570 steel and S31730 stainless steel are iron alloys. They have 61% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.6570 steel and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270 to 340
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 17
40
Fatigue Strength, MPa 500 to 660
170
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 910 to 1130
540
Tensile Strength: Yield (Proof), MPa 760 to 1060
200

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 440
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 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
24
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 1.7
4.6
Embodied Energy, MJ/kg 23
63
Embodied Water, L/kg 56
180

Common Calculations

PREN (Pitting Resistance) 2.5
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 140
170
Resilience: Unit (Modulus of Resilience), kJ/m3 1520 to 3010
99
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 32 to 40
19
Strength to Weight: Bending, points 27 to 31
18
Thermal Shock Resistance, points 27 to 33
12

Alloy Composition

Carbon (C), % 0.28 to 0.35
0 to 0.030
Chromium (Cr), % 1.0 to 1.4
17 to 19
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 94 to 96.2
52.4 to 61
Manganese (Mn), % 0.6 to 1.0
0 to 2.0
Molybdenum (Mo), % 0.3 to 0.5
3.0 to 4.0
Nickel (Ni), % 1.6 to 2.1
15 to 16.5
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.010