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ASTM A203 Steel vs. Nickel 690

ASTM A203 steel belongs to the iron alloys classification, while nickel 690 belongs to the nickel alloys.

For each property being compared, the top bar is ASTM A203 steel and the bottom bar is nickel 690.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 180
90
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 22 to 26
3.4 to 34
Fatigue Strength, MPa 210 to 280
180 to 300
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
79
Shear Strength, MPa 330 to 370
420 to 570
Tensile Strength: Ultimate (UTS), MPa 520 to 590
640 to 990
Tensile Strength: Yield (Proof), MPa 290 to 390
250 to 760

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Maximum Temperature: Mechanical, °C 410
1010
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1420
1340
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
14
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4 to 7.6
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5 to 8.7
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 3.2 to 4.0
50
Density, g/cm3 7.9
8.3
Embodied Carbon, kg CO2/kg material 1.6 to 1.7
8.2
Embodied Energy, MJ/kg 21 to 23
120
Embodied Water, L/kg 50 to 52
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
31 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 230 to 410
160 to 1440
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18 to 21
21 to 33
Strength to Weight: Bending, points 18 to 20
20 to 27
Thermal Diffusivity, mm2/s 14
3.5
Thermal Shock Resistance, points 15 to 17
16 to 25