ASTM Grade HP Steel vs. AWS E630

Both ASTM grade HP steel and AWS E630 are iron alloys. They have 58% 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 grade HP steel and the bottom bar is AWS E630.

ASTM Grade HP (26Cr-35Ni, N08705) Cast Stainless Steel AWS E630 (W37410) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

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

Elongation at Break, %		5.1
Elongation at Break, %		8.0

Poisson's Ratio		0.28
Poisson's Ratio		0.28

Shear Modulus, GPa		78
Shear Modulus, GPa		76

Tensile Strength: Ultimate (UTS), MPa		490
Tensile Strength: Ultimate (UTS), MPa		1040

Thermal Properties

Latent Heat of Fusion, J/g		320
Latent Heat of Fusion, J/g		280

Melting Completion (Liquidus), °C		1370
Melting Completion (Liquidus), °C		1430

Melting Onset (Solidus), °C		1330
Melting Onset (Solidus), °C		1380

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

Thermal Conductivity, W/m-K		12
Thermal Conductivity, W/m-K		17

Thermal Expansion, µm/m-K		16
Thermal Expansion, µm/m-K		14

Otherwise Unclassified Properties

Base Metal Price, % relative		34
Base Metal Price, % relative		14

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

Embodied Carbon, kg CO₂/kg material		5.8
Embodied Carbon, kg CO₂/kg material		2.8

Embodied Energy, MJ/kg		82
Embodied Energy, MJ/kg		40

Embodied Water, L/kg		220
Embodied Water, L/kg		140

Common Calculations

PREN (Pitting Resistance)		27
PREN (Pitting Resistance)		18

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		17
Strength to Weight: Axial, points		37

Strength to Weight: Bending, points		17
Strength to Weight: Bending, points		29

Thermal Diffusivity, mm²/s		3.2
Thermal Diffusivity, mm²/s		4.5

Thermal Shock Resistance, points		11
Thermal Shock Resistance, points		28

Alloy Composition

Carbon (C), %		0.35 to 0.75
Carbon (C), %		0 to 0.050

Chromium (Cr), %		24 to 28
Chromium (Cr), %		16 to 16.8

Copper (Cu), %		0
Copper (Cu), %		3.3 to 4.0

Iron (Fe), %		29.2 to 42.7
Iron (Fe), %		71.6 to 75.9

Manganese (Mn), %		0 to 2.0
Manganese (Mn), %		0.25 to 0.75

Molybdenum (Mo), %		0 to 0.5
Molybdenum (Mo), %		0 to 0.75

Nickel (Ni), %		33 to 37
Nickel (Ni), %		4.5 to 5.0

Niobium (Nb), %		0
Niobium (Nb), %		0.15 to 0.3

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

Silicon (Si), %		0 to 2.5
Silicon (Si), %		0 to 0.75

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