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ASTM A227 Spring Steel vs. ASTM A514 Steel

Both ASTM A227 spring steel and ASTM A514 steel are iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM A227 spring steel and the bottom bar is ASTM A514 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 500 to 640
240 to 250
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12
18 to 21
Fatigue Strength, MPa 900 to 1160
470 to 540
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Shear Strength, MPa 1030 to 1330
490 to 520
Tensile Strength: Ultimate (UTS), MPa 1720 to 2220
790 to 830
Tensile Strength: Yield (Proof), MPa 1430 to 1850
690 to 770

Thermal Properties

Latent Heat of Fusion, J/g 250
250 to 260
Maximum Temperature: Mechanical, °C 400
400 to 440
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
37 to 51
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.2 to 7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.3 to 8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
2.3 to 3.8
Density, g/cm3 7.8
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 1.4
1.6 to 1.8
Embodied Energy, MJ/kg 19
21 to 25
Embodied Water, L/kg 46
48 to 57

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 260
140 to 170
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 61 to 79
28 to 29
Strength to Weight: Bending, points 41 to 48
24 to 25
Thermal Diffusivity, mm2/s 14
10 to 14
Thermal Shock Resistance, points 55 to 71
23 to 24

Comparable Variants