MakeItFrom.com
Menu (ESC)

AISI 304 Stainless Steel vs. ACI-ASTM CH20 Steel

Both AISI 304 stainless steel and ACI-ASTM CH20 steel are iron alloys. They have 90% 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 304 stainless steel and the bottom bar is ACI-ASTM CH20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 360
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 8.0 to 43
38
Fatigue Strength, MPa 210 to 440
290
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 580 to 1180
610
Tensile Strength: Yield (Proof), MPa 230 to 860
350

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Corrosion, °C 420
440
Maximum Temperature: Mechanical, °C 710
1100
Melting Completion (Liquidus), °C 1450
1410
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
14
Thermal Expansion, µm/m-K 17
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 15
20
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.0
3.7
Embodied Energy, MJ/kg 43
53
Embodied Water, L/kg 150
180

Common Calculations

PREN (Pitting Resistance) 20
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 86 to 250
200
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 1870
300
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21 to 42
22
Strength to Weight: Bending, points 20 to 32
21
Thermal Diffusivity, mm2/s 4.2
3.7
Thermal Shock Resistance, points 12 to 25
15

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.2
Chromium (Cr), % 18 to 20
22 to 26
Iron (Fe), % 66.5 to 74
54.7 to 66
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 8.0 to 10.5
12 to 15
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.75
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040