ASTM Grade HH Steel vs. AWS BNi-6

ASTM grade HH steel belongs to the iron alloys classification, while AWS BNi-6 belongs to the nickel alloys. There are 19 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HH steel and the bottom bar is AWS BNi-6.

ASTM Grade HH (25Cr-12Ni, J93503) Cast Stainless Steel AWS BNi-6 (N99700) Filler Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		200
Elastic (Young's, Tensile) Modulus, GPa		160

Poisson's Ratio		0.27
Poisson's Ratio		0.31

Shear Modulus, GPa		79
Shear Modulus, GPa		62

Tensile Strength: Ultimate (UTS), MPa		580
Tensile Strength: Ultimate (UTS), MPa		450

Thermal Properties

Latent Heat of Fusion, J/g		310
Latent Heat of Fusion, J/g		260

Melting Completion (Liquidus), °C		1400
Melting Completion (Liquidus), °C		880

Melting Onset (Solidus), °C		1360
Melting Onset (Solidus), °C		880

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

Thermal Expansion, µm/m-K		17
Thermal Expansion, µm/m-K		9.8

Otherwise Unclassified Properties

Base Metal Price, % relative		20
Base Metal Price, % relative		55

Density, g/cm³		7.7
Density, g/cm³		8.2

Embodied Carbon, kg CO₂/kg material		3.7
Embodied Carbon, kg CO₂/kg material		9.4

Embodied Energy, MJ/kg		53
Embodied Energy, MJ/kg		130

Embodied Water, L/kg		180
Embodied Water, L/kg		210

Common Calculations

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		11

Stiffness to Weight: Bending, points		25
Stiffness to Weight: Bending, points		22

Strength to Weight: Axial, points		21
Strength to Weight: Axial, points		15

Strength to Weight: Bending, points		20
Strength to Weight: Bending, points		16

Thermal Shock Resistance, points		12
Thermal Shock Resistance, points		20

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		0 to 0.050

Carbon (C), %		0.2 to 0.5
Carbon (C), %		0 to 0.060

Chromium (Cr), %		24 to 28
Chromium (Cr), %		0

Cobalt (Co), %		0
Cobalt (Co), %		0 to 0.1

Iron (Fe), %		52.9 to 64.8
Iron (Fe), %		0

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

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

Nickel (Ni), %		11 to 14
Nickel (Ni), %		87.2 to 90

Phosphorus (P), %		0 to 0.040
Phosphorus (P), %		10 to 12

Selenium (Se), %		0
Selenium (Se), %		0 to 0.0050

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

Sulfur (S), %		0 to 0.040
Sulfur (S), %		0 to 0.020

Titanium (Ti), %		0
Titanium (Ti), %		0 to 0.050

Zirconium (Zr), %		0
Zirconium (Zr), %		0 to 0.050

Residuals, %		0
Residuals, %		0 to 0.5