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SAE-AISI T1 Steel vs. ASTM A387 Grade 9 Steel

Both SAE-AISI T1 steel and ASTM A387 grade 9 steel are iron alloys. They have 80% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI T1 steel and the bottom bar is ASTM A387 grade 9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 80
75
Tensile Strength: Ultimate (UTS), MPa 770 to 2130
500 to 600

Thermal Properties

Latent Heat of Fusion, J/g 240
270
Melting Completion (Liquidus), °C 1810
1460
Melting Onset (Solidus), °C 1750
1410
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 20
26
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 45
6.5
Density, g/cm3 9.3
7.8
Embodied Carbon, kg CO2/kg material 8.2
2.1
Embodied Energy, MJ/kg 130
28
Embodied Water, L/kg 90
87

Common Calculations

PREN (Pitting Resistance) 34
12
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 21
25
Strength to Weight: Axial, points 23 to 64
18 to 21
Strength to Weight: Bending, points 20 to 40
18 to 20
Thermal Diffusivity, mm2/s 5.2
6.9
Thermal Shock Resistance, points 23 to 64
14 to 17

Alloy Composition

Carbon (C), % 0.65 to 0.8
0 to 0.15
Chromium (Cr), % 3.8 to 4.5
8.0 to 10
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 73.2 to 77.2
87.1 to 90.8
Manganese (Mn), % 0.1 to 0.4
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 17.3 to 18.8
0
Vanadium (V), % 0.9 to 1.3
0 to 0.040

Comparable Variants