ASTM A227 Spring Steel vs. R60804 Alloy

ASTM A227 spring steel belongs to the iron alloys classification, while R60804 alloy belongs to the otherwise unclassified metals. There are 19 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 ASTM A227 spring steel and the bottom bar is R60804 alloy.

ASTM A227 Spring Steel UNS R60804 Zirconium-Tin Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		190
Elastic (Young's, Tensile) Modulus, GPa		98

Elongation at Break, %		12
Elongation at Break, %		22

Poisson's Ratio		0.29
Poisson's Ratio		0.34

Shear Modulus, GPa		72
Shear Modulus, GPa		36

Tensile Strength: Ultimate (UTS), MPa		1720 to 2220
Tensile Strength: Ultimate (UTS), MPa		430

Tensile Strength: Yield (Proof), MPa		1430 to 1850
Tensile Strength: Yield (Proof), MPa		270

Thermal Properties

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

Specific Heat Capacity, J/kg-K		470
Specific Heat Capacity, J/kg-K		270

Thermal Conductivity, W/m-K		52
Thermal Conductivity, W/m-K		22

Thermal Expansion, µm/m-K		12
Thermal Expansion, µm/m-K		6.0

Otherwise Unclassified Properties

Density, g/cm³		7.8
Density, g/cm³		6.5

Embodied Water, L/kg		46
Embodied Water, L/kg		290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		200 to 260
Resilience: Ultimate (Unit Rupture Work), MJ/m³		85

Stiffness to Weight: Axial, points		13
Stiffness to Weight: Axial, points		8.3

Stiffness to Weight: Bending, points		24
Stiffness to Weight: Bending, points		23

Strength to Weight: Axial, points		61 to 79
Strength to Weight: Axial, points		18

Strength to Weight: Bending, points		41 to 48
Strength to Weight: Bending, points		19

Thermal Diffusivity, mm²/s		14
Thermal Diffusivity, mm²/s		12

Thermal Shock Resistance, points		55 to 71
Thermal Shock Resistance, points		53

Alloy Composition

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Carbon (C), %		0.45 to 0.85
Carbon (C), %		0

Chromium (Cr), %		0
Chromium (Cr), %		0.070 to 0.13

Iron (Fe), %		97.4 to 99.1
Iron (Fe), %		0.18 to 0.24

Manganese (Mn), %		0.3 to 1.3
Manganese (Mn), %		0

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

Silicon (Si), %		0.15 to 0.35
Silicon (Si), %		0

Sulfur (S), %		0 to 0.050
Sulfur (S), %		0

Tin (Sn), %		0
Tin (Sn), %		1.2 to 1.7

Zirconium (Zr), %		0
Zirconium (Zr), %		97.8 to 98.6

Residuals, %		0
Residuals, %		0 to 0.12