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S31730 Stainless Steel vs. S45000 Stainless Steel

Both S31730 stainless steel and S45000 stainless steel are iron alloys. They have 81% of their average alloy composition in common. There are 29 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 S45000 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
280 to 410
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
6.8 to 14
Fatigue Strength, MPa 170
330 to 650
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 370
590 to 830
Tensile Strength: Ultimate (UTS), MPa 540
980 to 1410
Tensile Strength: Yield (Proof), MPa 200
580 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 420
400
Maximum Temperature: Mechanical, °C 990
840
Melting Completion (Liquidus), °C 1430
1440
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
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
94 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 99
850 to 4400
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 19
35 to 50
Strength to Weight: Bending, points 18
28 to 36
Thermal Shock Resistance, points 12
33 to 47

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.050
Chromium (Cr), % 17 to 19
14 to 16
Copper (Cu), % 4.0 to 5.0
1.3 to 1.8
Iron (Fe), % 52.4 to 61
72.1 to 79.3
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 3.0 to 4.0
0.5 to 1.0
Nickel (Ni), % 15 to 16.5
5.0 to 7.0
Nitrogen (N), % 0 to 0.045
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030