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S45000 Stainless Steel vs. S31727 Stainless Steel

Both S45000 stainless steel and S31727 stainless steel are iron alloys. They have 82% of their average alloy composition in common. There are 30 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 S45000 stainless steel and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 280 to 410
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 6.8 to 14
40
Fatigue Strength, MPa 330 to 650
240
Poisson's Ratio 0.28
0.28
Reduction in Area, % 22 to 50
56
Shear Modulus, GPa 76
78
Shear Strength, MPa 590 to 830
430
Tensile Strength: Ultimate (UTS), MPa 980 to 1410
630
Tensile Strength: Yield (Proof), MPa 580 to 1310
270

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 400
420
Maximum Temperature: Mechanical, °C 840
1010
Melting Completion (Liquidus), °C 1440
1440
Melting Onset (Solidus), °C 1390
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Base Metal Price, % relative 13
24
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.8
4.7
Embodied Energy, MJ/kg 39
64
Embodied Water, L/kg 130
180

Common Calculations

PREN (Pitting Resistance) 17
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 94 to 160
200
Resilience: Unit (Modulus of Resilience), kJ/m3 850 to 4400
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 35 to 50
22
Strength to Weight: Bending, points 28 to 36
20
Thermal Shock Resistance, points 33 to 47
14

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 14 to 16
17.5 to 19
Copper (Cu), % 1.3 to 1.8
2.8 to 4.0
Iron (Fe), % 72.1 to 79.3
53.7 to 61.3
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.5 to 1.0
3.8 to 4.5
Nickel (Ni), % 5.0 to 7.0
14.5 to 16.5
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030