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EN 1.4959 Stainless Steel vs. S31730 Stainless Steel

Both EN 1.4959 stainless steel and S31730 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 28 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 1.4959 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, % 40
40
Fatigue Strength, MPa 170
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 430
370
Tensile Strength: Ultimate (UTS), MPa 630
540
Tensile Strength: Yield (Proof), MPa 190
200

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 510
420
Maximum Temperature: Mechanical, °C 1090
990
Melting Completion (Liquidus), °C 1400
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 31
24
Density, g/cm3 8.0
8.0
Embodied Carbon, kg CO2/kg material 5.4
4.6
Embodied Energy, MJ/kg 76
63
Embodied Water, L/kg 200
180

Common Calculations

PREN (Pitting Resistance) 21
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
170
Resilience: Unit (Modulus of Resilience), kJ/m3 96
99
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
19
Strength to Weight: Bending, points 20
18
Thermal Shock Resistance, points 15
12

Alloy Composition

Aluminum (Al), % 0.25 to 0.65
0
Carbon (C), % 0.050 to 0.1
0 to 0.030
Chromium (Cr), % 19 to 22
17 to 19
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
4.0 to 5.0
Iron (Fe), % 39.4 to 50.5
52.4 to 61
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 30 to 34
15 to 16.5
Nitrogen (N), % 0 to 0.030
0 to 0.045
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.010
Titanium (Ti), % 0.25 to 0.65
0