AWS BVAg-18 vs. SAE-AISI H21 Steel

AWS BVAg-18 belongs to the otherwise unclassified metals classification, while SAE-AISI H21 steel belongs to the iron alloys. There are 17 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is AWS BVAg-18 and the bottom bar is SAE-AISI H21 steel.

AWS BVAg-18 (P07607) Vacuum Service Filler Metal SAE-AISI H21 (T20821) Tungsten Hot-Work Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		82
Elastic (Young's, Tensile) Modulus, GPa		200

Poisson's Ratio		0.36
Poisson's Ratio		0.29

Shear Modulus, GPa		30
Shear Modulus, GPa		76

Tensile Strength: Ultimate (UTS), MPa		180
Tensile Strength: Ultimate (UTS), MPa		720 to 1790

Thermal Properties

Latent Heat of Fusion, J/g		140
Latent Heat of Fusion, J/g		250

Melting Completion (Liquidus), °C		720
Melting Completion (Liquidus), °C		1630

Melting Onset (Solidus), °C		600
Melting Onset (Solidus), °C		1580

Specific Heat Capacity, J/kg-K		280
Specific Heat Capacity, J/kg-K		440

Thermal Expansion, µm/m-K		19
Thermal Expansion, µm/m-K		11

Otherwise Unclassified Properties

Density, g/cm³		9.7
Density, g/cm³		8.5

Embodied Carbon, kg CO₂/kg material		59
Embodied Carbon, kg CO₂/kg material		4.5

Embodied Energy, MJ/kg		930
Embodied Energy, MJ/kg		68

Common Calculations

Stiffness to Weight: Axial, points		4.7
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		15
Stiffness to Weight: Bending, points		23

Strength to Weight: Axial, points		5.1
Strength to Weight: Axial, points		23 to 58

Strength to Weight: Bending, points		7.3
Strength to Weight: Bending, points		21 to 38

Thermal Shock Resistance, points		8.1
Thermal Shock Resistance, points		24 to 59

Alloy Composition

Cadmium (Cd), %		0 to 0.0010
Cadmium (Cd), %		0

Carbon (C), %		0 to 0.0050
Carbon (C), %		0.28 to 0.36

Chromium (Cr), %		0
Chromium (Cr), %		3.0 to 3.8

Copper (Cu), %		28.5 to 31.5
Copper (Cu), %		0 to 0.25

Iron (Fe), %		0
Iron (Fe), %		87.6 to 93.8

Lead (Pb), %		0 to 0.0020
Lead (Pb), %		0

Manganese (Mn), %		0
Manganese (Mn), %		0.15 to 0.4

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

Phosphorus (P), %		0 to 0.0020
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		0
Silicon (Si), %		0.15 to 0.5

Silver (Ag), %		59 to 61
Silver (Ag), %		0

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

Tin (Sn), %		9.5 to 10.5
Tin (Sn), %		0

Tungsten (W), %		0
Tungsten (W), %		8.5 to 10

Vanadium (V), %		0
Vanadium (V), %		0.3 to 0.6

Zinc (Zn), %		0 to 0.0010
Zinc (Zn), %		0