EN 1.7323 Steel vs. ASTM Grade HN Steel

Both EN 1.7323 steel and ASTM grade HN steel are iron alloys. They have 53% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.7323 steel and the bottom bar is ASTM grade HN steel.

EN 1.7323 (20MoCrS4) Chromium-Molybdenum Steel ASTM Grade HN (20Cr-25Ni, J94213) Cast Stainless Steel

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness		150 to 180
Brinell Hardness		140

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		480 to 1460
Tensile Strength: Ultimate (UTS), MPa		500

Thermal Properties

Latent Heat of Fusion, J/g		250
Latent Heat of Fusion, J/g		310

Maximum Temperature: Mechanical, °C		410
Maximum Temperature: Mechanical, °C		1080

Melting Completion (Liquidus), °C		1460
Melting Completion (Liquidus), °C		1400

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 Conductivity, W/m-K		45
Thermal Conductivity, W/m-K		13

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		16

Otherwise Unclassified Properties

Base Metal Price, % relative		2.5
Base Metal Price, % relative		26

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

Embodied Carbon, kg CO₂/kg material		1.5
Embodied Carbon, kg CO₂/kg material		4.6

Embodied Energy, MJ/kg		20
Embodied Energy, MJ/kg		66

Embodied Water, L/kg		50
Embodied Water, L/kg		180

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		17 to 52
Strength to Weight: Axial, points		17

Strength to Weight: Bending, points		17 to 36
Strength to Weight: Bending, points		18

Thermal Diffusivity, mm²/s		12
Thermal Diffusivity, mm²/s		3.5

Thermal Shock Resistance, points		14 to 43
Thermal Shock Resistance, points		11

Alloy Composition

Carbon (C), %		0.17 to 0.23
Carbon (C), %		0.2 to 0.5

Chromium (Cr), %		0.3 to 0.6
Chromium (Cr), %		19 to 23

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

Iron (Fe), %		97.1 to 98.4
Iron (Fe), %		44.9 to 57.8

Manganese (Mn), %		0.7 to 1.0
Manganese (Mn), %		0 to 2.0

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

Nickel (Ni), %		0
Nickel (Ni), %		23 to 27

Phosphorus (P), %		0 to 0.025
Phosphorus (P), %		0 to 0.040

Silicon (Si), %		0 to 0.3
Silicon (Si), %		0 to 2.0

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