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S31730 Stainless Steel vs. EN 1.4307 Stainless Steel

Both S31730 stainless steel and EN 1.4307 stainless steel are iron alloys. They have 86% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S31730 stainless steel and the bottom bar is EN 1.4307 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
180 to 270
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
14 to 46
Fatigue Strength, MPa 170
190 to 320
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 370
410 to 550
Tensile Strength: Ultimate (UTS), MPa 540
590 to 900
Tensile Strength: Yield (Proof), MPa 200
200 to 570

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 990
940
Melting Completion (Liquidus), °C 1430
1430
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 24
15
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 4.6
3.0
Embodied Energy, MJ/kg 63
43
Embodied Water, L/kg 180
140

Common Calculations

PREN (Pitting Resistance) 30
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
110 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 99
100 to 810
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
21 to 32
Strength to Weight: Bending, points 18
20 to 27
Thermal Shock Resistance, points 12
13 to 20

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 17 to 19
17.5 to 19.5
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 52.4 to 61
66.8 to 74.5
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 15 to 16.5
8.0 to 10.5
Nitrogen (N), % 0 to 0.045
0 to 0.1
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