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AISI 304Cu Stainless Steel vs. SAE-AISI M3 Class 2 Steel

Both AISI 304Cu stainless steel and SAE-AISI M3 class 2 steel are iron alloys. They have 73% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is AISI 304Cu stainless steel and the bottom bar is SAE-AISI M3 class 2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 530
770 to 2210

Thermal Properties

Latent Heat of Fusion, J/g 290
260
Melting Completion (Liquidus), °C 1410
1620
Melting Onset (Solidus), °C 1370
1570
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 13
26
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 16
25
Density, g/cm3 7.8
8.3
Embodied Carbon, kg CO2/kg material 3.0
12
Embodied Energy, MJ/kg 43
180
Embodied Water, L/kg 150
110

Common Calculations

PREN (Pitting Resistance) 18
33
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 19
26 to 74
Strength to Weight: Bending, points 19
22 to 45
Thermal Diffusivity, mm2/s 3.5
7.2
Thermal Shock Resistance, points 12
24 to 69

Alloy Composition

Carbon (C), % 0 to 0.030
1.2 to 1.3
Chromium (Cr), % 17 to 19
3.8 to 4.5
Copper (Cu), % 3.0 to 4.0
0 to 0.25
Iron (Fe), % 63.9 to 72
75.8 to 82.3
Manganese (Mn), % 0 to 2.0
0.15 to 0.4
Molybdenum (Mo), % 0
4.8 to 6.5
Nickel (Ni), % 8.0 to 10
0 to 0.3
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0.2 to 0.45
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
5.0 to 6.8
Vanadium (V), % 0
2.8 to 3.8