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SAE-AISI M6 Steel vs. SAE-AISI H26 Steel

Both SAE-AISI M6 steel and SAE-AISI H26 steel are iron alloys. They have 82% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI M6 steel and the bottom bar is SAE-AISI H26 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 840 to 2210
720 to 2100

Thermal Properties

Latent Heat of Fusion, J/g 260
240
Melting Completion (Liquidus), °C 1560
1810
Melting Onset (Solidus), °C 1510
1760
Specific Heat Capacity, J/kg-K 440
410
Thermal Conductivity, W/m-K 17
22
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 39
45
Density, g/cm3 8.4
9.3
Embodied Carbon, kg CO2/kg material 8.0
8.1
Embodied Energy, MJ/kg 120
120
Embodied Water, L/kg 160
90

Common Calculations

PREN (Pitting Resistance) 28
34
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 23
21
Strength to Weight: Axial, points 28 to 73
22 to 63
Strength to Weight: Bending, points 24 to 45
19 to 39
Thermal Diffusivity, mm2/s 4.7
5.6
Thermal Shock Resistance, points 26 to 68
22 to 63

Alloy Composition

Carbon (C), % 0.75 to 0.85
0.45 to 0.55
Chromium (Cr), % 3.8 to 4.5
3.8 to 4.5
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 68.8 to 74.6
73.3 to 77.5
Manganese (Mn), % 0.15 to 0.4
0.15 to 0.4
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.45
0.15 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 3.8 to 4.8
17.3 to 19
Vanadium (V), % 1.3 to 1.7
0.75 to 1.3

Comparable Variants