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SAE-AISI T1 Steel vs. SAE-AISI M1 Steel

Both SAE-AISI T1 steel and SAE-AISI M1 steel are iron alloys. They have 83% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI T1 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 0.29
0.29
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 770 to 2130
730 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 240
270
Melting Completion (Liquidus), °C 1810
1560
Melting Onset (Solidus), °C 1750
1510
Specific Heat Capacity, J/kg-K 410
450
Thermal Conductivity, W/m-K 20
29
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 45
18
Density, g/cm3 9.3
8.1
Embodied Carbon, kg CO2/kg material 8.2
7.0
Embodied Energy, MJ/kg 130
99
Embodied Water, L/kg 90
98

Common Calculations

PREN (Pitting Resistance) 34
35
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 23 to 64
25 to 73
Strength to Weight: Bending, points 20 to 40
22 to 45
Thermal Diffusivity, mm2/s 5.2
8.0
Thermal Shock Resistance, points 23 to 64
23 to 66

Alloy Composition

Carbon (C), % 0.65 to 0.8
0.78 to 0.88
Chromium (Cr), % 3.8 to 4.5
3.5 to 4.0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 73.2 to 77.2
81 to 84.8
Manganese (Mn), % 0.1 to 0.4
0.15 to 0.4
Molybdenum (Mo), % 0
8.2 to 9.2
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.4
0.2 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 17.3 to 18.8
1.4 to 2.1
Vanadium (V), % 0.9 to 1.3
1.0 to 1.4

Comparable Variants