MakeItFrom.com
Menu (ESC)

SAE-AISI D7 Steel vs. SAE-AISI M41 Steel

Both SAE-AISI D7 steel and SAE-AISI M41 steel are iron alloys. They have 85% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI D7 steel and the bottom bar is SAE-AISI M41 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 73
77
Tensile Strength: Ultimate (UTS), MPa 800 to 2120
800 to 2290

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Melting Completion (Liquidus), °C 1440
1600
Melting Onset (Solidus), °C 1400
1550
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 27
22
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 10
33
Density, g/cm3 7.6
8.4
Embodied Carbon, kg CO2/kg material 11
9.1
Embodied Energy, MJ/kg 180
140
Embodied Water, L/kg 130
120

Common Calculations

PREN (Pitting Resistance) 16
28
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 29 to 78
26 to 76
Strength to Weight: Bending, points 25 to 48
23 to 46
Thermal Diffusivity, mm2/s 7.4
6.0
Thermal Shock Resistance, points 27 to 72
25 to 71

Alloy Composition

Carbon (C), % 2.2 to 2.5
1.1 to 1.2
Chromium (Cr), % 11.5 to 13.5
3.8 to 4.5
Cobalt (Co), % 0
4.8 to 5.8
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 76.6 to 81.9
73.4 to 78.9
Manganese (Mn), % 0 to 0.6
0.2 to 0.6
Molybdenum (Mo), % 0.7 to 1.2
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 to 0.6
0.15 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
6.3 to 7.0
Vanadium (V), % 3.8 to 4.4
1.8 to 2.3

Comparable Variants