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Grade 300 Maraging Steel vs. ASTM A227 Spring Steel

Both grade 300 maraging steel and ASTM A227 spring steel are iron alloys. They have 67% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is grade 300 maraging steel and the bottom bar is ASTM A227 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 6.5 to 18
12
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 75
72
Shear Strength, MPa 640 to 1190
1030 to 1330
Tensile Strength: Ultimate (UTS), MPa 1030 to 2030
1720 to 2220
Tensile Strength: Yield (Proof), MPa 760 to 1990
1430 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1480
1450
Melting Onset (Solidus), °C 1430
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 34
1.8
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 5.1
1.4
Embodied Energy, MJ/kg 68
19
Embodied Water, L/kg 150
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
200 to 260
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 35 to 68
61 to 79
Strength to Weight: Bending, points 28 to 43
41 to 48
Thermal Shock Resistance, points 31 to 62
55 to 71

Alloy Composition

Aluminum (Al), % 0.050 to 0.15
0
Boron (B), % 0 to 0.0030
0
Calcium (Ca), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
0.45 to 0.85
Cobalt (Co), % 8.5 to 9.5
0
Iron (Fe), % 65 to 68.4
97.4 to 99.1
Manganese (Mn), % 0 to 0.1
0.3 to 1.3
Molybdenum (Mo), % 4.6 to 5.2
0
Nickel (Ni), % 18 to 19
0
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0 to 0.1
0.15 to 0.35
Sulfur (S), % 0 to 0.010
0 to 0.050
Titanium (Ti), % 0.5 to 0.8
0
Zirconium (Zr), % 0 to 0.020
0

Comparable Variants