ASTM A387 Grade 22L Class 1 vs. SAE-AISI H41 Steel

Both ASTM A387 grade 22L class 1 and SAE-AISI H41 steel are iron alloys. They have 87% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 22L class 1 and the bottom bar is SAE-AISI H41 steel.

ASTM A387 Grade 22L Class 1 2.25Cr-1Mo Steel SAE-AISI H41 (T20841) Molybdenum Hot-Work Steel

Metric UnitsUS Customary Units

Mechanical Properties

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

Poisson's Ratio		0.29
Poisson's Ratio		0.29

Shear Modulus, GPa		74
Shear Modulus, GPa		77

Tensile Strength: Ultimate (UTS), MPa		500
Tensile Strength: Ultimate (UTS), MPa		710 to 2210

Thermal Properties

Latent Heat of Fusion, J/g		260
Latent Heat of Fusion, J/g		270

Melting Completion (Liquidus), °C		1470
Melting Completion (Liquidus), °C		1560

Melting Onset (Solidus), °C		1430
Melting Onset (Solidus), °C		1510

Specific Heat Capacity, J/kg-K		470
Specific Heat Capacity, J/kg-K		450

Thermal Conductivity, W/m-K		40
Thermal Conductivity, W/m-K		28

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Base Metal Price, % relative		3.8
Base Metal Price, % relative		18

Density, g/cm³		7.9
Density, g/cm³		8.1

Embodied Carbon, kg CO₂/kg material		1.7
Embodied Carbon, kg CO₂/kg material		6.8

Embodied Energy, MJ/kg		23
Embodied Energy, MJ/kg		97

Embodied Water, L/kg		58
Embodied Water, L/kg		97

Common Calculations

PREN (Pitting Resistance)		5.6
PREN (Pitting Resistance)		35

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

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

Strength to Weight: Axial, points		18
Strength to Weight: Axial, points		24 to 76

Strength to Weight: Bending, points		18
Strength to Weight: Bending, points		22 to 47

Thermal Diffusivity, mm²/s		11
Thermal Diffusivity, mm²/s		7.7

Thermal Shock Resistance, points		14
Thermal Shock Resistance, points		20 to 64

Alloy Composition

Carbon (C), %		0 to 0.1
Carbon (C), %		0.6 to 0.75

Chromium (Cr), %		2.0 to 2.5
Chromium (Cr), %		3.5 to 4.0

Iron (Fe), %		95.2 to 96.8
Iron (Fe), %		81.8 to 85

Manganese (Mn), %		0.3 to 0.6
Manganese (Mn), %		0.15 to 0.4

Molybdenum (Mo), %		0.9 to 1.1
Molybdenum (Mo), %		8.2 to 9.2

Phosphorus (P), %		0 to 0.025
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		0 to 0.5
Silicon (Si), %		0.2 to 0.45

Sulfur (S), %		0 to 0.025
Sulfur (S), %		0 to 0.030

Tungsten (W), %		0
Tungsten (W), %		1.4 to 2.1

Vanadium (V), %		0
Vanadium (V), %		1.0 to 1.3