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EN 1.4307 Stainless Steel vs. S31730 Stainless Steel

Both EN 1.4307 stainless steel and S31730 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 EN 1.4307 stainless steel and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 17.5 to 19.5
17 to 19
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 66.8 to 74.5
52.4 to 61
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 8.0 to 10.5
15 to 16.5
Nitrogen (N), % 0 to 0.1
0 to 0.045
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.010