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S45000 Stainless Steel vs. S31254 Stainless Steel

Both S45000 stainless steel and S31254 stainless steel are iron alloys. They have 77% of their average alloy composition in common. There are 34 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is S45000 stainless steel and the bottom bar is S31254 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
290
Poisson's Ratio 0.28
0.28
Reduction in Area, % 22 to 50
56
Shear Modulus, GPa 76
80
Shear Strength, MPa 590 to 830
490
Tensile Strength: Ultimate (UTS), MPa 980 to 1410
720
Tensile Strength: Yield (Proof), MPa 580 to 1310
330

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 400
420
Maximum Temperature: Mechanical, °C 840
1090
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 17
14
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
28
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.8
5.5
Embodied Energy, MJ/kg 39
74
Embodied Water, L/kg 130
190

Common Calculations

PREN (Pitting Resistance) 17
44
Resilience: Ultimate (Unit Rupture Work), MJ/m3 94 to 160
240
Resilience: Unit (Modulus of Resilience), kJ/m3 850 to 4400
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 35 to 50
25
Strength to Weight: Bending, points 28 to 36
22
Thermal Diffusivity, mm2/s 4.5
3.8
Thermal Shock Resistance, points 33 to 47
15

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.020
Chromium (Cr), % 14 to 16
19.5 to 20.5
Copper (Cu), % 1.3 to 1.8
0.5 to 1.0
Iron (Fe), % 72.1 to 79.3
51.4 to 56.3
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.5 to 1.0
6.0 to 6.5
Nickel (Ni), % 5.0 to 7.0
17.5 to 18.5
Nitrogen (N), % 0
0.18 to 0.22
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.010