Annealed SAE-AISI A7 vs. Annealed ASTM B617

Annealed SAE-AISI A7 belongs to the iron alloys classification, while annealed ASTM B617 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is annealed SAE-AISI A7 and the bottom bar is annealed ASTM B617.

Annealed A7 Tool Steel Annealed ASTM B617 Coin Silver Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		190
Elastic (Young's, Tensile) Modulus, GPa		75

Poisson's Ratio		0.29
Poisson's Ratio		0.37

Shear Modulus, GPa		72
Shear Modulus, GPa		28

Tensile Strength: Ultimate (UTS), MPa		800
Tensile Strength: Ultimate (UTS), MPa		290

Thermal Properties

Latent Heat of Fusion, J/g		260
Latent Heat of Fusion, J/g		120

Melting Completion (Liquidus), °C		1470
Melting Completion (Liquidus), °C		870

Melting Onset (Solidus), °C		1430
Melting Onset (Solidus), °C		780

Specific Heat Capacity, J/kg-K		470
Specific Heat Capacity, J/kg-K		250

Thermal Expansion, µm/m-K		12
Thermal Expansion, µm/m-K		19

Otherwise Unclassified Properties

Density, g/cm³		7.7
Density, g/cm³		10

Common Calculations

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		4.1

Stiffness to Weight: Bending, points		25
Stiffness to Weight: Bending, points		14

Strength to Weight: Axial, points		29
Strength to Weight: Axial, points		7.7

Strength to Weight: Bending, points		25
Strength to Weight: Bending, points		9.3

Thermal Shock Resistance, points		27
Thermal Shock Resistance, points		14

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		0 to 0.0050

Cadmium (Cd), %		0
Cadmium (Cd), %		0 to 0.050

Carbon (C), %		2.0 to 2.9
Carbon (C), %		0

Chromium (Cr), %		5.0 to 5.8
Chromium (Cr), %		0

Copper (Cu), %		0 to 0.25
Copper (Cu), %		9.0 to 10.4

Iron (Fe), %		81.4 to 87.7
Iron (Fe), %		0 to 0.050

Lead (Pb), %		0
Lead (Pb), %		0 to 0.030

Manganese (Mn), %		0 to 0.8
Manganese (Mn), %		0

Molybdenum (Mo), %		0.9 to 1.4
Molybdenum (Mo), %		0

Nickel (Ni), %		0 to 0.3
Nickel (Ni), %		0 to 0.010

Phosphorus (P), %		0 to 0.030
Phosphorus (P), %		0 to 0.020

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

Silver (Ag), %		0
Silver (Ag), %		89.6 to 91

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

Tungsten (W), %		0.5 to 1.5
Tungsten (W), %		0

Vanadium (V), %		3.9 to 5.2
Vanadium (V), %		0

Zinc (Zn), %		0
Zinc (Zn), %		0 to 0.060

Residuals, %		0
Residuals, %		0 to 0.060