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ASTM A229 Spring Steel vs. EN 1.4568 Stainless Steel

Both ASTM A229 spring steel and EN 1.4568 stainless steel are iron alloys. They have 75% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM A229 spring steel and the bottom bar is EN 1.4568 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 14
2.3 to 21
Fatigue Strength, MPa 710 to 790
220 to 670
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Shear Strength, MPa 1020 to 1140
520 to 930
Tensile Strength: Ultimate (UTS), MPa 1690 to 1890
830 to 1620
Tensile Strength: Yield (Proof), MPa 1100 to 1230
330 to 1490

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
890
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 50
16
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
13
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.8
Embodied Energy, MJ/kg 19
40
Embodied Water, L/kg 46
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 230
36 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 3260 to 4080
290 to 5710
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 60 to 67
30 to 58
Strength to Weight: Bending, points 40 to 43
25 to 40
Thermal Diffusivity, mm2/s 14
4.3
Thermal Shock Resistance, points 54 to 60
23 to 46

Alloy Composition

Aluminum (Al), % 0
0.7 to 1.5
Carbon (C), % 0.55 to 0.85
0 to 0.090
Chromium (Cr), % 0
16 to 18
Iron (Fe), % 97.5 to 99
70.9 to 76.8
Manganese (Mn), % 0.3 to 1.2
0 to 1.0
Nickel (Ni), % 0
6.5 to 7.8
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 0.7
Sulfur (S), % 0 to 0.050
0 to 0.015

Comparable Variants