ASTM A387 Grade 22L Class 1 vs. AWS E240

Both ASTM A387 grade 22L class 1 and AWS E240 are iron alloys. They have 67% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (9, 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 AWS E240.

ASTM A387 Grade 22L Class 1 2.25Cr-1Mo Steel AWS E240 (W32410) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

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

Elongation at Break, %		20
Elongation at Break, %		17

Poisson's Ratio		0.29
Poisson's Ratio		0.28

Shear Modulus, GPa		74
Shear Modulus, GPa		77

Tensile Strength: Ultimate (UTS), MPa		500
Tensile Strength: Ultimate (UTS), MPa		770

Thermal Properties

Latent Heat of Fusion, J/g		260
Latent Heat of Fusion, J/g		290

Melting Completion (Liquidus), °C		1470
Melting Completion (Liquidus), °C		1390

Melting Onset (Solidus), °C		1430
Melting Onset (Solidus), °C		1350

Specific Heat Capacity, J/kg-K		470
Specific Heat Capacity, J/kg-K		480

Thermal Conductivity, W/m-K		40
Thermal Conductivity, W/m-K		15

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		15

Otherwise Unclassified Properties

Base Metal Price, % relative		3.8
Base Metal Price, % relative		14

Density, g/cm³		7.9
Density, g/cm³		7.7

Embodied Carbon, kg CO₂/kg material		1.7
Embodied Carbon, kg CO₂/kg material		3.0

Embodied Energy, MJ/kg		23
Embodied Energy, MJ/kg		42

Embodied Water, L/kg		58
Embodied Water, L/kg		160

Common Calculations

PREN (Pitting Resistance)		5.6
PREN (Pitting Resistance)		22

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		18
Strength to Weight: Axial, points		28

Strength to Weight: Bending, points		18
Strength to Weight: Bending, points		24

Thermal Diffusivity, mm²/s		11
Thermal Diffusivity, mm²/s		3.9

Thermal Shock Resistance, points		14
Thermal Shock Resistance, points		19

Alloy Composition

Carbon (C), %		0 to 0.1
Carbon (C), %		0 to 0.060

Chromium (Cr), %		2.0 to 2.5
Chromium (Cr), %		17 to 19

Copper (Cu), %		0
Copper (Cu), %		0 to 0.75

Iron (Fe), %		95.2 to 96.8
Iron (Fe), %		58.6 to 68.4

Manganese (Mn), %		0.3 to 0.6
Manganese (Mn), %		10.5 to 13.5

Molybdenum (Mo), %		0.9 to 1.1
Molybdenum (Mo), %		0 to 0.75

Nickel (Ni), %		0
Nickel (Ni), %		4.0 to 6.0

Nitrogen (N), %		0
Nitrogen (N), %		0.1 to 0.3

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

Silicon (Si), %		0 to 0.5
Silicon (Si), %		0 to 1.0

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