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SAE-AISI M33 Steel vs. SAE-AISI M41 Steel

Both SAE-AISI M33 steel and SAE-AISI M41 steel are iron alloys. They have a moderately high 91% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI M33 steel and the bottom bar is SAE-AISI M41 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 810 to 2210
800 to 2290

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Melting Completion (Liquidus), °C 1550
1600
Melting Onset (Solidus), °C 1500
1550
Specific Heat Capacity, J/kg-K 440
440
Thermal Conductivity, W/m-K 20
22
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 32
33
Density, g/cm3 8.2
8.4
Embodied Carbon, kg CO2/kg material 7.7
9.1
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 150
120

Common Calculations

PREN (Pitting Resistance) 38
28
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 27 to 75
26 to 76
Strength to Weight: Bending, points 24 to 46
23 to 46
Thermal Diffusivity, mm2/s 5.5
6.0
Thermal Shock Resistance, points 25 to 68
25 to 71

Alloy Composition

Carbon (C), % 0.85 to 0.92
1.1 to 1.2
Chromium (Cr), % 3.5 to 4.0
3.8 to 4.5
Cobalt (Co), % 7.8 to 8.8
4.8 to 5.8
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 71.4 to 76.3
73.4 to 78.9
Manganese (Mn), % 0.15 to 0.4
0.2 to 0.6
Molybdenum (Mo), % 9.0 to 10
3.3 to 4.3
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.15 to 0.5
0.15 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 1.3 to 2.1
6.3 to 7.0
Vanadium (V), % 1.0 to 1.4
1.8 to 2.3

Comparable Variants