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EN 1.4313 Stainless Steel vs. S31730 Stainless Steel

Both EN 1.4313 stainless steel and S31730 stainless steel are iron alloys. They have 75% 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 1.4313 stainless steel and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 12 to 17
40
Fatigue Strength, MPa 340 to 510
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 460 to 600
370
Tensile Strength: Ultimate (UTS), MPa 750 to 1000
540
Tensile Strength: Yield (Proof), MPa 580 to 910
200

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 390
420
Maximum Temperature: Mechanical, °C 780
990
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 10
16

Otherwise Unclassified Properties

Base Metal Price, % relative 10
24
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.4
4.6
Embodied Energy, MJ/kg 34
63
Embodied Water, L/kg 110
180

Common Calculations

PREN (Pitting Resistance) 15
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 150
170
Resilience: Unit (Modulus of Resilience), kJ/m3 870 to 2100
99
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27 to 36
19
Strength to Weight: Bending, points 23 to 28
18
Thermal Shock Resistance, points 27 to 36
12

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 12 to 14
17 to 19
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 78.5 to 84.2
52.4 to 61
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0.3 to 0.7
3.0 to 4.0
Nickel (Ni), % 3.5 to 4.5
15 to 16.5
Nitrogen (N), % 0 to 0.020
0 to 0.045
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.010