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EN 1.4887 Stainless Steel vs. S31730 Stainless Steel

Both EN 1.4887 stainless steel and S31730 stainless steel are iron alloys. They have 75% 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 EN 1.4887 stainless steel and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
40
Fatigue Strength, MPa 280
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 400
370
Tensile Strength: Ultimate (UTS), MPa 580
540
Tensile Strength: Yield (Proof), MPa 300
200

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Corrosion, °C 600
420
Maximum Temperature: Mechanical, °C 1100
990
Melting Completion (Liquidus), °C 1390
1430
Melting Onset (Solidus), °C 1350
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 15
16

Otherwise Unclassified Properties

Base Metal Price, % relative 39
24
Density, g/cm3 8.0
8.0
Embodied Carbon, kg CO2/kg material 6.7
4.6
Embodied Energy, MJ/kg 96
63
Embodied Water, L/kg 210
180

Common Calculations

PREN (Pitting Resistance) 22
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
170
Resilience: Unit (Modulus of Resilience), kJ/m3 230
99
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20
19
Strength to Weight: Bending, points 19
18
Thermal Shock Resistance, points 14
12

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 20 to 23
17 to 19
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 34.2 to 45
52.4 to 61
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 33 to 37
15 to 16.5
Niobium (Nb), % 1.0 to 1.5
0
Nitrogen (N), % 0 to 0.1
0 to 0.045
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 1.0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.010