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EN 1.8888 Steel vs. S31730 Stainless Steel

Both EN 1.8888 steel and S31730 stainless steel are iron alloys. They have 60% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.8888 steel and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16
40
Fatigue Strength, MPa 470
170
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 510
370
Tensile Strength: Ultimate (UTS), MPa 830
540
Tensile Strength: Yield (Proof), MPa 720
200

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 420
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 3.7
24
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 1.9
4.6
Embodied Energy, MJ/kg 26
63
Embodied Water, L/kg 54
180

Common Calculations

PREN (Pitting Resistance) 2.0
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
170
Resilience: Unit (Modulus of Resilience), kJ/m3 1370
99
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29
19
Strength to Weight: Bending, points 25
18
Thermal Shock Resistance, points 24
12

Alloy Composition

Boron (B), % 0 to 0.0050
0
Carbon (C), % 0 to 0.2
0 to 0.030
Chromium (Cr), % 0 to 1.5
17 to 19
Copper (Cu), % 0 to 0.3
4.0 to 5.0
Iron (Fe), % 91.9 to 100
52.4 to 61
Manganese (Mn), % 0 to 1.7
0 to 2.0
Molybdenum (Mo), % 0 to 0.7
3.0 to 4.0
Nickel (Ni), % 0 to 2.5
15 to 16.5
Niobium (Nb), % 0 to 0.060
0
Nitrogen (N), % 0 to 0.015
0 to 0.045
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.0050
0 to 0.010
Titanium (Ti), % 0 to 0.050
0
Vanadium (V), % 0 to 0.12
0
Zirconium (Zr), % 0 to 0.15
0