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EN 1.7221 Steel vs. SAE-AISI M34 Steel

Both EN 1.7221 steel and SAE-AISI M34 steel are iron alloys. They have 76% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is EN 1.7221 steel and the bottom bar is SAE-AISI M34 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 650 to 780
800 to 2170

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1460
1540
Melting Onset (Solidus), °C 1420
1500
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 44
24
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
32
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.5
9.5
Embodied Energy, MJ/kg 20
140
Embodied Water, L/kg 51
150

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 27
27 to 74
Strength to Weight: Bending, points 21 to 24
23 to 46
Thermal Diffusivity, mm2/s 12
6.7
Thermal Shock Resistance, points 19 to 23
25 to 67

Alloy Composition

Carbon (C), % 0.22 to 0.29
0.85 to 0.92
Chromium (Cr), % 0.8 to 1.2
3.5 to 4.0
Cobalt (Co), % 0
7.8 to 8.8
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 96.8 to 98.3
71.3 to 76.5
Manganese (Mn), % 0.5 to 0.8
0.15 to 0.4
Molybdenum (Mo), % 0.15 to 0.3
7.8 to 9.2
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.6
0.2 to 0.45
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
1.4 to 2.1
Vanadium (V), % 0
1.9 to 2.3

Comparable Variants