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AISI 348H Stainless Steel vs. SAE-AISI M1 Steel

Both AISI 348H stainless steel and SAE-AISI M1 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 (13, in this case) are not shown.

For each property being compared, the top bar is AISI 348H stainless steel and the bottom bar is SAE-AISI M1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 580
730 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Melting Completion (Liquidus), °C 1430
1560
Melting Onset (Solidus), °C 1390
1510
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 15
29
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 20
18
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 3.9
7.0
Embodied Energy, MJ/kg 56
99
Embodied Water, L/kg 150
98

Common Calculations

PREN (Pitting Resistance) 18
35
Stiffness to Weight: Axial, points 14
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 Diffusivity, mm2/s 4.1
8.0
Thermal Shock Resistance, points 13
23 to 66

Alloy Composition

Carbon (C), % 0.040 to 0.1
0.78 to 0.88
Chromium (Cr), % 17 to 19
3.5 to 4.0
Cobalt (Co), % 0 to 0.2
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 63.8 to 73.6
81 to 84.8
Manganese (Mn), % 0 to 2.0
0.15 to 0.4
Molybdenum (Mo), % 0
8.2 to 9.2
Nickel (Ni), % 9.0 to 13
0 to 0.3
Niobium (Nb), % 0.32 to 1.0
0
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 0.75
0.2 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tantalum (Ta), % 0 to 0.1
0
Tungsten (W), % 0
1.4 to 2.1
Vanadium (V), % 0
1.0 to 1.4