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SAE-AISI H25 Steel vs. SAE-AISI T5 Steel

Both SAE-AISI H25 steel and SAE-AISI T5 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 H25 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 79
80
Tensile Strength: Ultimate (UTS), MPa 710 to 1620
860 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Melting Completion (Liquidus), °C 1750
1810
Melting Onset (Solidus), °C 1700
1750
Specific Heat Capacity, J/kg-K 420
410
Thermal Conductivity, W/m-K 26
21
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 38
60
Density, g/cm3 9.1
9.4
Embodied Carbon, kg CO2/kg material 6.2
11
Embodied Energy, MJ/kg 93
170
Embodied Water, L/kg 83
140

Common Calculations

PREN (Pitting Resistance) 29
37
Stiffness to Weight: Axial, points 12
12
Stiffness to Weight: Bending, points 22
21
Strength to Weight: Axial, points 22 to 50
25 to 63
Strength to Weight: Bending, points 20 to 34
21 to 39
Thermal Diffusivity, mm2/s 6.7
5.5
Thermal Shock Resistance, points 22 to 49
26 to 66

Alloy Composition

Carbon (C), % 0.22 to 0.32
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), % 77.2 to 81.3
60.6 to 68.3
Manganese (Mn), % 0.15 to 0.4
0.2 to 0.4
Molybdenum (Mo), % 0
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), % 0.15 to 0.4
0.2 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 14 to 16
17.5 to 19
Vanadium (V), % 0.4 to 0.6
1.8 to 2.4

Comparable Variants