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AISI 439 Stainless Steel vs. ACI-ASTM CH10 Steel

Both AISI 439 stainless steel and ACI-ASTM CH10 steel are iron alloys. They have 80% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 439 stainless steel and the bottom bar is ACI-ASTM CH10 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
160
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23
34
Fatigue Strength, MPa 170
180
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 490
540
Tensile Strength: Yield (Proof), MPa 250
230

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 530
440
Maximum Temperature: Mechanical, °C 890
1100
Melting Completion (Liquidus), °C 1510
1410
Melting Onset (Solidus), °C 1430
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
20
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.3
3.7
Embodied Energy, MJ/kg 34
53
Embodied Water, L/kg 120
180

Common Calculations

PREN (Pitting Resistance) 18
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
150
Resilience: Unit (Modulus of Resilience), kJ/m3 160
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
19
Strength to Weight: Bending, points 18
19
Thermal Diffusivity, mm2/s 6.7
3.9
Thermal Shock Resistance, points 16
12

Alloy Composition

Aluminum (Al), % 0 to 0.15
0
Carbon (C), % 0 to 0.030
0 to 0.1
Chromium (Cr), % 17 to 19
22 to 26
Iron (Fe), % 77.1 to 82.8
54.8 to 66
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.5
12 to 15
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Titanium (Ti), % 0.2 to 1.1
0