EN 1.4378 Stainless Steel vs. EN 1.7039 Steel

Both EN 1.4378 stainless steel and EN 1.7039 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 (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 EN 1.7039 steel.

EN 1.4378 (X6CrMnNiN18-13-3) Stainless Steel EN 1.7039 (41CrS4) Chromium 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		73

Tensile Strength: Ultimate (UTS), MPa		760 to 1130
Tensile Strength: Ultimate (UTS), MPa		530 to 1850

Thermal Properties

Latent Heat of Fusion, J/g		290
Latent Heat of Fusion, J/g		250

Maximum Temperature: Mechanical, °C		910
Maximum Temperature: Mechanical, °C		420

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		13

Otherwise Unclassified Properties

Base Metal Price, % relative		12
Base Metal Price, % relative		2.3

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

Embodied Carbon, kg CO₂/kg material		2.7
Embodied Carbon, kg CO₂/kg material		1.4

Embodied Energy, MJ/kg		39
Embodied Energy, MJ/kg		19

Embodied Water, L/kg		150
Embodied Water, L/kg		51

Common Calculations

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

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		19 to 65

Strength to Weight: Bending, points		24 to 31
Strength to Weight: Bending, points		19 to 43

Thermal Shock Resistance, points		16 to 23
Thermal Shock Resistance, points		16 to 54

Alloy Composition

Carbon (C), %		0 to 0.080
Carbon (C), %		0.38 to 0.45

Chromium (Cr), %		17 to 19
Chromium (Cr), %		0.9 to 1.2

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

Iron (Fe), %		61.2 to 69
Iron (Fe), %		96.8 to 98.1

Manganese (Mn), %		11.5 to 14.5
Manganese (Mn), %		0.6 to 0.9

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 0.025

Silicon (Si), %		0 to 1.0
Silicon (Si), %		0 to 0.3

Sulfur (S), %		0 to 0.030
Sulfur (S), %		0.020 to 0.040