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SAE-AISI H42 Steel vs. SAE-AISI T5 Steel

Both SAE-AISI H42 steel and SAE-AISI T5 steel are iron alloys. They have 79% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI H42 steel and the bottom bar is SAE-AISI T5 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 700 to 1980
860 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Melting Completion (Liquidus), °C 1620
1810
Melting Onset (Solidus), °C 1570
1750
Specific Heat Capacity, J/kg-K 440
410
Thermal Conductivity, W/m-K 24
21
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 24
60
Density, g/cm3 8.4
9.4
Embodied Carbon, kg CO2/kg material 8.8
11
Embodied Energy, MJ/kg 130
170
Embodied Water, L/kg 98
140

Common Calculations

PREN (Pitting Resistance) 31
37
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 23
21
Strength to Weight: Axial, points 23 to 65
25 to 63
Strength to Weight: Bending, points 21 to 42
21 to 39
Thermal Diffusivity, mm2/s 6.5
5.5
Thermal Shock Resistance, points 20 to 57
26 to 66

Alloy Composition

Carbon (C), % 0.55 to 0.7
0.75 to 0.85
Chromium (Cr), % 3.8 to 4.5
3.8 to 5.0
Cobalt (Co), % 0
7.0 to 9.5
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 79.3 to 83.8
60.6 to 68.3
Manganese (Mn), % 0.15 to 0.4
0.2 to 0.4
Molybdenum (Mo), % 4.5 to 5.5
0.5 to 1.3
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0
0.2 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 5.5 to 6.8
17.5 to 19
Vanadium (V), % 1.8 to 2.2
1.8 to 2.4

Comparable Variants