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AISI 204 Stainless Steel vs. ACI-ASTM CA6NM Steel

Both AISI 204 stainless steel and ACI-ASTM CA6NM steel are iron alloys. They have 89% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AISI 204 stainless steel and the bottom bar is ACI-ASTM CA6NM steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 330
250
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23 to 39
17
Fatigue Strength, MPa 320 to 720
380
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 730 to 1100
850
Tensile Strength: Yield (Proof), MPa 380 to 1080
620

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 410
390
Maximum Temperature: Mechanical, °C 850
770
Melting Completion (Liquidus), °C 1410
1450
Melting Onset (Solidus), °C 1370
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
25
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 10
10
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.4
2.5
Embodied Energy, MJ/kg 35
34
Embodied Water, L/kg 130
110

Common Calculations

PREN (Pitting Resistance) 20
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240 to 250
130
Resilience: Unit (Modulus of Resilience), kJ/m3 360 to 2940
1000
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27 to 40
30
Strength to Weight: Bending, points 24 to 31
26
Thermal Diffusivity, mm2/s 4.1
6.7
Thermal Shock Resistance, points 16 to 24
31

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.060
Chromium (Cr), % 15 to 17
11.5 to 14
Iron (Fe), % 69.6 to 76.4
78.4 to 84.6
Manganese (Mn), % 7.0 to 9.0
0 to 1.0
Molybdenum (Mo), % 0
0.4 to 1.0
Nickel (Ni), % 1.5 to 3.0
3.5 to 4.5
Nitrogen (N), % 0.15 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030