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S44700 Stainless Steel vs. SAE-AISI M1 Steel

Both S44700 stainless steel and SAE-AISI M1 steel are iron alloys. They have 75% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is S44700 stainless steel and the bottom bar is SAE-AISI M1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 82
77
Tensile Strength: Ultimate (UTS), MPa 600
730 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1460
1560
Melting Onset (Solidus), °C 1410
1510
Specific Heat Capacity, J/kg-K 480
450
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 18
18
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 3.6
7.0
Embodied Energy, MJ/kg 49
99
Embodied Water, L/kg 180
98

Common Calculations

PREN (Pitting Resistance) 42
35
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
25 to 73
Strength to Weight: Bending, points 20
22 to 45
Thermal Shock Resistance, points 19
23 to 66

Alloy Composition

Carbon (C), % 0 to 0.010
0.78 to 0.88
Chromium (Cr), % 28 to 30
3.5 to 4.0
Copper (Cu), % 0 to 0.15
0 to 0.25
Iron (Fe), % 64.9 to 68.5
81 to 84.8
Manganese (Mn), % 0 to 0.3
0.15 to 0.4
Molybdenum (Mo), % 3.5 to 4.2
8.2 to 9.2
Nickel (Ni), % 0 to 0.15
0 to 0.3
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.2
0.2 to 0.5
Sulfur (S), % 0 to 0.020
0 to 0.030
Tungsten (W), % 0
1.4 to 2.1
Vanadium (V), % 0
1.0 to 1.4