SAE-AISI P3 Steel vs. ASTM Grade HP Steel

Both SAE-AISI P3 steel and ASTM grade HP steel are iron alloys. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI P3 steel and the bottom bar is ASTM grade HP steel.

SAE-AISI P3 (T51603) Low-Carbon Mould Steel ASTM Grade HP (26Cr-35Ni, N08705) Cast Stainless Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		190
Elastic (Young's, Tensile) Modulus, GPa		200

Poisson's Ratio		0.29
Poisson's Ratio		0.28

Shear Modulus, GPa		73
Shear Modulus, GPa		78

Tensile Strength: Ultimate (UTS), MPa		410 to 1980
Tensile Strength: Ultimate (UTS), MPa		490

Thermal Properties

Latent Heat of Fusion, J/g		250
Latent Heat of Fusion, J/g		320

Melting Completion (Liquidus), °C		1460
Melting Completion (Liquidus), °C		1370

Melting Onset (Solidus), °C		1420
Melting Onset (Solidus), °C		1330

Specific Heat Capacity, J/kg-K		470
Specific Heat Capacity, J/kg-K		480

Thermal Conductivity, W/m-K		46
Thermal Conductivity, W/m-K		12

Thermal Expansion, µm/m-K		12
Thermal Expansion, µm/m-K		16

Otherwise Unclassified Properties

Base Metal Price, % relative		2.8
Base Metal Price, % relative		34

Density, g/cm³		7.9
Density, g/cm³		7.9

Embodied Carbon, kg CO₂/kg material		1.5
Embodied Carbon, kg CO₂/kg material		5.8

Embodied Energy, MJ/kg		20
Embodied Energy, MJ/kg		82

Embodied Water, L/kg		50
Embodied Water, L/kg		220

Common Calculations

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		14

Stiffness to Weight: Bending, points		24
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		15 to 70
Strength to Weight: Axial, points		17

Strength to Weight: Bending, points		16 to 44
Strength to Weight: Bending, points		17

Thermal Diffusivity, mm²/s		12
Thermal Diffusivity, mm²/s		3.2

Thermal Shock Resistance, points		14 to 65
Thermal Shock Resistance, points		11

Alloy Composition

Carbon (C), %		0 to 0.1
Carbon (C), %		0.35 to 0.75

Chromium (Cr), %		0.4 to 0.75
Chromium (Cr), %		24 to 28

Copper (Cu), %		0 to 0.25
Copper (Cu), %		0

Iron (Fe), %		96.3 to 98.4
Iron (Fe), %		29.2 to 42.7

Manganese (Mn), %		0.2 to 0.6
Manganese (Mn), %		0 to 2.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		0 to 0.5

Nickel (Ni), %		1.0 to 1.5
Nickel (Ni), %		33 to 37

Phosphorus (P), %		0 to 0.030
Phosphorus (P), %		0 to 0.040

Silicon (Si), %		0 to 0.4
Silicon (Si), %		0 to 2.5

Sulfur (S), %		0 to 0.030
Sulfur (S), %		0 to 0.040