EN 1.4378 Stainless Steel vs. SAE-AISI P4 Steel

Both EN 1.4378 stainless steel and SAE-AISI P4 steel are iron alloys. They have 70% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is EN 1.4378 stainless steel and the bottom bar is SAE-AISI P4 steel.

EN 1.4378 (X6CrMnNiN18-13-3) Stainless Steel SAE-AISI P4 (T51604) Low-Carbon Mould Steel

Metric UnitsUS Customary Units

Mechanical Properties

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

Poisson's Ratio		0.28
Poisson's Ratio		0.29

Shear Modulus, GPa		77
Shear Modulus, GPa		74

Tensile Strength: Ultimate (UTS), MPa		760 to 1130
Tensile Strength: Ultimate (UTS), MPa		390 to 1980

Thermal Properties

Latent Heat of Fusion, J/g		290
Latent Heat of Fusion, J/g		260

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

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

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

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

Otherwise Unclassified Properties

Base Metal Price, % relative		12
Base Metal Price, % relative		4.4

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

Embodied Carbon, kg CO₂/kg material		2.7
Embodied Carbon, kg CO₂/kg material		1.8

Embodied Energy, MJ/kg		39
Embodied Energy, MJ/kg		23

Embodied Water, L/kg		150
Embodied Water, L/kg		68

Common Calculations

PREN (Pitting Resistance)		23
PREN (Pitting Resistance)		7.0

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

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

Strength to Weight: Axial, points		28 to 41
Strength to Weight: Axial, points		14 to 70

Strength to Weight: Bending, points		24 to 31
Strength to Weight: Bending, points		15 to 45

Thermal Shock Resistance, points		16 to 23
Thermal Shock Resistance, points		13 to 64

Alloy Composition

Carbon (C), %		0 to 0.080
Carbon (C), %		0 to 0.12

Chromium (Cr), %		17 to 19
Chromium (Cr), %		4.0 to 5.3

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

Iron (Fe), %		61.2 to 69
Iron (Fe), %		92.3 to 95.3

Manganese (Mn), %		11.5 to 14.5
Manganese (Mn), %		0.2 to 0.6

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

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

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

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

Silicon (Si), %		0 to 1.0
Silicon (Si), %		0.1 to 0.4

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