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S31730 Stainless Steel vs. EN 1.4371 Stainless Steel

Both S31730 stainless steel and EN 1.4371 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is S31730 stainless steel and the bottom bar is EN 1.4371 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
220 to 230
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
45 to 51
Fatigue Strength, MPa 170
290 to 340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 370
520 to 540
Tensile Strength: Ultimate (UTS), MPa 540
740 to 750
Tensile Strength: Yield (Proof), MPa 200
320 to 340

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 420
410
Maximum Temperature: Mechanical, °C 990
880
Melting Completion (Liquidus), °C 1430
1410
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Base Metal Price, % relative 24
12
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 4.6
2.6
Embodied Energy, MJ/kg 63
38
Embodied Water, L/kg 180
140

Common Calculations

PREN (Pitting Resistance) 30
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
270 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 99
250 to 300
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
27
Strength to Weight: Bending, points 18
24
Thermal Shock Resistance, points 12
16

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 17 to 19
16 to 17.5
Copper (Cu), % 4.0 to 5.0
0 to 1.0
Iron (Fe), % 52.4 to 61
66.7 to 74.4
Manganese (Mn), % 0 to 2.0
6.0 to 8.0
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 15 to 16.5
3.5 to 5.5
Nitrogen (N), % 0 to 0.045
0.15 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.015