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AISI 312 Stainless Steel vs. S45000 Stainless Steel

Both AISI 312 stainless steel and S45000 stainless steel are iron alloys. They have 89% of their average alloy composition in common.

For each property being compared, the top bar is AISI 312 stainless steel and the bottom bar is S45000 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
280 to 410
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
6.8 to 14
Fatigue Strength, MPa 370
330 to 650
Poisson's Ratio 0.27
0.28
Reduction in Area, % 56
22 to 50
Rockwell C Hardness 27
28 to 44
Shear Modulus, GPa 80
76
Shear Strength, MPa 510
590 to 830
Tensile Strength: Ultimate (UTS), MPa 780
980 to 1410
Tensile Strength: Yield (Proof), MPa 510
580 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 450
400
Maximum Temperature: Mechanical, °C 1100
840
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1390
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
17
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 17
13
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.4
2.8
Embodied Energy, MJ/kg 48
39
Embodied Water, L/kg 170
130

Common Calculations

PREN (Pitting Resistance) 33
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
94 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 640
850 to 4400
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
35 to 50
Strength to Weight: Bending, points 24
28 to 36
Thermal Diffusivity, mm2/s 4.3
4.5
Thermal Shock Resistance, points 21
33 to 47

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.050
Chromium (Cr), % 24 to 26
14 to 16
Copper (Cu), % 0
1.3 to 1.8
Iron (Fe), % 62.2 to 69.2
72.1 to 79.3
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 1.2 to 2.0
0.5 to 1.0
Nickel (Ni), % 5.5 to 6.5
5.0 to 7.0
Nitrogen (N), % 0.14 to 0.2
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030