SAE-AISI P20 Steel vs. S24000 Stainless Steel

Both SAE-AISI P20 steel and S24000 stainless steel are iron alloys. They have 67% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI P20 steel and the bottom bar is S24000 stainless steel.

SAE-AISI P20 (T51620) Low-Carbon Mould Steel UNS S24000 (XM-29) 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		77

Tensile Strength: Ultimate (UTS), MPa		540 to 1050
Tensile Strength: Ultimate (UTS), MPa		770

Thermal Properties

Latent Heat of Fusion, J/g		260
Latent Heat of Fusion, J/g		280

Melting Completion (Liquidus), °C		1460
Melting Completion (Liquidus), °C		1390

Melting Onset (Solidus), °C		1420
Melting Onset (Solidus), °C		1350

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

Thermal Expansion, µm/m-K		12
Thermal Expansion, µm/m-K		17

Otherwise Unclassified Properties

Base Metal Price, % relative		2.8
Base Metal Price, % relative		12

Density, g/cm³		7.8
Density, g/cm³		7.6

Embodied Carbon, kg CO₂/kg material		1.6
Embodied Carbon, kg CO₂/kg material		2.7

Embodied Energy, MJ/kg		21
Embodied Energy, MJ/kg		39

Embodied Water, L/kg		52
Embodied Water, L/kg		150

Common Calculations

PREN (Pitting Resistance)		2.6
PREN (Pitting Resistance)		23

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		19 to 37
Strength to Weight: Axial, points		28

Strength to Weight: Bending, points		19 to 29
Strength to Weight: Bending, points		24

Thermal Shock Resistance, points		18 to 35
Thermal Shock Resistance, points		16

Alloy Composition

Carbon (C), %		0.28 to 0.4
Carbon (C), %		0 to 0.080

Chromium (Cr), %		0.4 to 2.0
Chromium (Cr), %		17 to 19

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

Iron (Fe), %		95.2 to 98.5
Iron (Fe), %		61.5 to 69

Manganese (Mn), %		0.35 to 0.71
Manganese (Mn), %		11.5 to 14.5

Molybdenum (Mo), %		0.3 to 0.55
Molybdenum (Mo), %		0

Nickel (Ni), %		0
Nickel (Ni), %		2.3 to 3.7

Nitrogen (N), %		0
Nitrogen (N), %		0.2 to 0.4

Phosphorus (P), %		0 to 0.030
Phosphorus (P), %		0 to 0.060

Silicon (Si), %		0.2 to 0.8
Silicon (Si), %		0 to 0.75

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