MakeItFrom.com
Menu (ESC)

SAE-AISI H25 Steel vs. SAE-AISI T8 Steel

Both SAE-AISI H25 steel and SAE-AISI T8 steel are iron alloys. They have a moderately high 92% 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 T8 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 79
78
Tensile Strength: Ultimate (UTS), MPa 710 to 1620
780 to 2140

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Melting Completion (Liquidus), °C 1750
1730
Melting Onset (Solidus), °C 1700
1670
Specific Heat Capacity, J/kg-K 420
420
Thermal Conductivity, W/m-K 26
18
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 38
45
Density, g/cm3 9.1
9.0
Embodied Carbon, kg CO2/kg material 6.2
10
Embodied Energy, MJ/kg 93
160
Embodied Water, L/kg 83
120

Common Calculations

PREN (Pitting Resistance) 29
30
Stiffness to Weight: Axial, points 12
12
Stiffness to Weight: Bending, points 22
22
Strength to Weight: Axial, points 22 to 50
24 to 66
Strength to Weight: Bending, points 20 to 34
21 to 41
Thermal Diffusivity, mm2/s 6.7
4.8
Thermal Shock Resistance, points 22 to 49
24 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 4.5
Cobalt (Co), % 0
4.3 to 5.8
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 77.2 to 81.3
69.3 to 75.4
Manganese (Mn), % 0.15 to 0.4
0.2 to 0.4
Molybdenum (Mo), % 0
0.4 to 1.0
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
13.3 to 14.8
Vanadium (V), % 0.4 to 0.6
1.8 to 2.4

Comparable Variants