ASTM Grade HL Steel vs. SAE-AISI A2 Steel

Both ASTM grade HL steel and SAE-AISI A2 steel are iron alloys. They have 54% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HL steel and the bottom bar is SAE-AISI A2 steel.

ASTM Grade HL (29Cr-20Ni, N08604) Cast Stainless Steel SAE-AISI A2 (T30102) Air-Hardening Steel

Metric UnitsUS Customary Units

Mechanical Properties

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

Poisson's Ratio		0.27
Poisson's Ratio		0.29

Shear Modulus, GPa		80
Shear Modulus, GPa		74

Tensile Strength: Ultimate (UTS), MPa		500
Tensile Strength: Ultimate (UTS), MPa		710 to 2040

Thermal Properties

Latent Heat of Fusion, J/g		320
Latent Heat of Fusion, J/g		260

Melting Completion (Liquidus), °C		1390
Melting Completion (Liquidus), °C		1450

Melting Onset (Solidus), °C		1340
Melting Onset (Solidus), °C		1410

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

Thermal Expansion, µm/m-K		17
Thermal Expansion, µm/m-K		11

Otherwise Unclassified Properties

Base Metal Price, % relative		27
Base Metal Price, % relative		5.5

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

Embodied Carbon, kg CO₂/kg material		4.5
Embodied Carbon, kg CO₂/kg material		2.7

Embodied Energy, MJ/kg		65
Embodied Energy, MJ/kg		38

Embodied Water, L/kg		210
Embodied Water, L/kg		73

Common Calculations

PREN (Pitting Resistance)		31
PREN (Pitting Resistance)		8.9

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

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

Strength to Weight: Axial, points		18
Strength to Weight: Axial, points		25 to 73

Strength to Weight: Bending, points		18
Strength to Weight: Bending, points		23 to 46

Thermal Shock Resistance, points		11
Thermal Shock Resistance, points		25 to 71

Alloy Composition

Carbon (C), %		0.2 to 0.6
Carbon (C), %		1.0 to 1.1

Chromium (Cr), %		28 to 32
Chromium (Cr), %		4.8 to 5.5

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

Iron (Fe), %		40.8 to 53.8
Iron (Fe), %		89.4 to 93.3

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

Molybdenum (Mo), %		0 to 0.5
Molybdenum (Mo), %		0.9 to 1.4

Nickel (Ni), %		18 to 22
Nickel (Ni), %		0 to 0.3

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

Silicon (Si), %		0 to 2.0
Silicon (Si), %		0 to 0.5

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

Vanadium (V), %		0
Vanadium (V), %		0.15 to 0.5