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EN 1.4901 Stainless Steel vs. S31730 Stainless Steel

Both EN 1.4901 stainless steel and S31730 stainless steel are iron alloys. They have 67% 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 1.4901 stainless steel and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 19
40
Fatigue Strength, MPa 310
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 460
370
Tensile Strength: Ultimate (UTS), MPa 740
540
Tensile Strength: Yield (Proof), MPa 490
200

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Corrosion, °C 380
420
Maximum Temperature: Mechanical, °C 650
990
Melting Completion (Liquidus), °C 1490
1430
Melting Onset (Solidus), °C 1450
1390
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 11
24
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 2.8
4.6
Embodied Energy, MJ/kg 40
63
Embodied Water, L/kg 89
180

Common Calculations

PREN (Pitting Resistance) 14
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
170
Resilience: Unit (Modulus of Resilience), kJ/m3 620
99
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
19
Strength to Weight: Bending, points 23
18
Thermal Shock Resistance, points 23
12

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Boron (B), % 0.0010 to 0.0060
0
Carbon (C), % 0.070 to 0.13
0 to 0.030
Chromium (Cr), % 8.5 to 9.5
17 to 19
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 85.8 to 89.1
52.4 to 61
Manganese (Mn), % 0.3 to 0.6
0 to 2.0
Molybdenum (Mo), % 0.3 to 0.6
3.0 to 4.0
Nickel (Ni), % 0 to 0.4
15 to 16.5
Niobium (Nb), % 0.040 to 0.090
0
Nitrogen (N), % 0.030 to 0.070
0 to 0.045
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.010
Titanium (Ti), % 0 to 0.010
0
Tungsten (W), % 1.5 to 2.0
0
Vanadium (V), % 0.15 to 0.25
0
Zirconium (Zr), % 0 to 0.010
0