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ZA-27 vs. ASTM A229 Spring Steel

ZA-27 belongs to the zinc alloys classification, while ASTM A229 spring steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ZA-27 and the bottom bar is ASTM A229 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 100 to 120
490 to 550
Elastic (Young's, Tensile) Modulus, GPa 78
190
Elongation at Break, % 2.0 to 4.5
14
Fatigue Strength, MPa 110 to 170
710 to 790
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 31
72
Shear Strength, MPa 230 to 330
1020 to 1140
Tensile Strength: Ultimate (UTS), MPa 400 to 430
1690 to 1890
Tensile Strength: Yield (Proof), MPa 260 to 370
1100 to 1230

Thermal Properties

Latent Heat of Fusion, J/g 130
250
Maximum Temperature: Mechanical, °C 120
400
Melting Completion (Liquidus), °C 480
1450
Melting Onset (Solidus), °C 380
1410
Specific Heat Capacity, J/kg-K 530
470
Thermal Conductivity, W/m-K 130
50
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 53
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 11
1.8
Density, g/cm3 5.0
7.8
Embodied Carbon, kg CO2/kg material 4.2
1.4
Embodied Energy, MJ/kg 80
19
Embodied Water, L/kg 570
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.1 to 18
200 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 420 to 890
3260 to 4080
Stiffness to Weight: Axial, points 8.6
13
Stiffness to Weight: Bending, points 28
24
Strength to Weight: Axial, points 22 to 24
60 to 67
Strength to Weight: Bending, points 24 to 25
40 to 43
Thermal Diffusivity, mm2/s 47
14
Thermal Shock Resistance, points 14 to 15
54 to 60

Alloy Composition

Aluminum (Al), % 25 to 28
0
Cadmium (Cd), % 0 to 0.0060
0
Carbon (C), % 0
0.55 to 0.85
Copper (Cu), % 2.0 to 2.5
0
Iron (Fe), % 0 to 0.1
97.5 to 99
Lead (Pb), % 0 to 0.0060
0
Magnesium (Mg), % 0.010 to 0.020
0
Manganese (Mn), % 0
0.3 to 1.2
Nickel (Ni), % 0 to 0.020
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.080
0.15 to 0.35
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0 to 0.0030
0
Zinc (Zn), % 69.3 to 73
0

Comparable Variants