SAE-AISI P4 Steel vs. EN 1.4729 Stainless Steel

Both SAE-AISI P4 steel and EN 1.4729 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI P4 steel and the bottom bar is EN 1.4729 stainless steel.

SAE-AISI P4 (T51604) Low-Carbon Mould Steel EN 1.4729 (GX40CrSi13) Cast Stainless Steel

Metric UnitsUS Customary Units

Mechanical Properties

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

Poisson's Ratio		0.29
Poisson's Ratio		0.28

Shear Modulus, GPa		74
Shear Modulus, GPa		75

Thermal Properties

Latent Heat of Fusion, J/g		260
Latent Heat of Fusion, J/g		300

Melting Completion (Liquidus), °C		1460
Melting Completion (Liquidus), °C		1420

Melting Onset (Solidus), °C		1420
Melting Onset (Solidus), °C		1380

Specific Heat Capacity, J/kg-K		470
Specific Heat Capacity, J/kg-K		490

Thermal Conductivity, W/m-K		41
Thermal Conductivity, W/m-K		24

Thermal Expansion, µm/m-K		12
Thermal Expansion, µm/m-K		10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		8.1
Electrical Conductivity: Equal Volume, % IACS		2.8

Electrical Conductivity: Equal Weight (Specific), % IACS		9.3
Electrical Conductivity: Equal Weight (Specific), % IACS		3.3

Otherwise Unclassified Properties

Base Metal Price, % relative		4.4
Base Metal Price, % relative		7.5

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

Embodied Carbon, kg CO₂/kg material		1.8
Embodied Carbon, kg CO₂/kg material		2.1

Embodied Energy, MJ/kg		23
Embodied Energy, MJ/kg		29

Embodied Water, L/kg		68
Embodied Water, L/kg		100

Common Calculations

PREN (Pitting Resistance)		7.0
PREN (Pitting Resistance)		14

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

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

Thermal Diffusivity, mm²/s		11
Thermal Diffusivity, mm²/s		6.5

Alloy Composition

Carbon (C), %		0 to 0.12
Carbon (C), %		0.3 to 0.5

Chromium (Cr), %		4.0 to 5.3
Chromium (Cr), %		12 to 14

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

Iron (Fe), %		92.3 to 95.3
Iron (Fe), %		80.4 to 86.7

Manganese (Mn), %		0.2 to 0.6
Manganese (Mn), %		0 to 1.0

Molybdenum (Mo), %		0.4 to 1.0
Molybdenum (Mo), %		0 to 0.5

Nickel (Ni), %		0
Nickel (Ni), %		0 to 1.0

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

Silicon (Si), %		0.1 to 0.4
Silicon (Si), %		1.0 to 2.5

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