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SAE-AISI 1151 Steel vs. ASTM Grade HP Steel

Both SAE-AISI 1151 steel and ASTM grade HP steel are iron alloys. They have a modest 37% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1151 steel and the bottom bar is ASTM grade HP steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 220
140
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 17
5.1
Fatigue Strength, MPa 260 to 410
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
78
Tensile Strength: Ultimate (UTS), MPa 710 to 800
490
Tensile Strength: Yield (Proof), MPa 390 to 660
260

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1460
1370
Melting Onset (Solidus), °C 1420
1330
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
12
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
34
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
5.8
Embodied Energy, MJ/kg 18
82
Embodied Water, L/kg 46
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86 to 100
21
Resilience: Unit (Modulus of Resilience), kJ/m3 400 to 1170
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25 to 28
17
Strength to Weight: Bending, points 22 to 24
17
Thermal Diffusivity, mm2/s 14
3.2
Thermal Shock Resistance, points 22 to 25
11

Alloy Composition

Carbon (C), % 0.48 to 0.55
0.35 to 0.75
Chromium (Cr), % 0
24 to 28
Iron (Fe), % 98.3 to 98.7
29.2 to 42.7
Manganese (Mn), % 0.7 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
33 to 37
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0
0 to 2.5
Sulfur (S), % 0.080 to 0.13
0 to 0.040