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S31730 Stainless Steel vs. EN 1.4525 Stainless Steel

Both S31730 stainless steel and EN 1.4525 stainless steel are iron alloys. They have 82% of their average alloy composition in common. There are 27 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 S31730 stainless steel and the bottom bar is EN 1.4525 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
5.6 to 13
Fatigue Strength, MPa 170
480 to 540
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 540
1030 to 1250
Tensile Strength: Yield (Proof), MPa 200
840 to 1120

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 420
430
Maximum Temperature: Mechanical, °C 990
860
Melting Completion (Liquidus), °C 1430
1430
Melting Onset (Solidus), °C 1390
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Base Metal Price, % relative 24
13
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 4.6
2.8
Embodied Energy, MJ/kg 63
39
Embodied Water, L/kg 180
130

Common Calculations

PREN (Pitting Resistance) 30
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
68 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 99
1820 to 3230
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
36 to 45
Strength to Weight: Bending, points 18
29 to 33
Thermal Shock Resistance, points 12
34 to 41

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.070
Chromium (Cr), % 17 to 19
15 to 17
Copper (Cu), % 4.0 to 5.0
2.5 to 4.0
Iron (Fe), % 52.4 to 61
70.4 to 79
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 3.0 to 4.0
0 to 0.8
Nickel (Ni), % 15 to 16.5
3.5 to 5.5
Niobium (Nb), % 0
0 to 0.35
Nitrogen (N), % 0 to 0.045
0 to 0.050
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.010
0 to 0.025