EN 1.7321 Steel vs. ASTM Grade HL Steel

Both EN 1.7321 steel and ASTM grade HL steel are iron alloys. They have 49% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is EN 1.7321 steel and the bottom bar is ASTM grade HL steel.

EN 1.7321 (20MoCr4) Chromium-Molybdenum Steel ASTM Grade HL (29Cr-20Ni, N08604) Cast Stainless Steel

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness		150 to 170
Brinell Hardness		150

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

Poisson's Ratio		0.29
Poisson's Ratio		0.27

Shear Modulus, GPa		73
Shear Modulus, GPa		80

Tensile Strength: Ultimate (UTS), MPa		490 to 1460
Tensile Strength: Ultimate (UTS), MPa		500

Thermal Properties

Latent Heat of Fusion, J/g		250
Latent Heat of Fusion, J/g		320

Maximum Temperature: Mechanical, °C		410
Maximum Temperature: Mechanical, °C		1100

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

Melting Onset (Solidus), °C		1420
Melting Onset (Solidus), °C		1340

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

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		17

Otherwise Unclassified Properties

Base Metal Price, % relative		2.5
Base Metal Price, % relative		27

Density, g/cm³		7.9
Density, g/cm³		7.8

Embodied Carbon, kg CO₂/kg material		1.5
Embodied Carbon, kg CO₂/kg material		4.5

Embodied Energy, MJ/kg		20
Embodied Energy, MJ/kg		65

Embodied Water, L/kg		50
Embodied Water, L/kg		210

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		18

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

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 0.6

Chromium (Cr), %		0.3 to 0.6
Chromium (Cr), %		28 to 32

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

Iron (Fe), %		97.1 to 98.4
Iron (Fe), %		40.8 to 53.8

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), %		18 to 22

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 to 0.025
Sulfur (S), %		0 to 0.040