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ACI-ASTM CH20 Steel vs. EN 1.4825 Stainless Steel

Both ACI-ASTM CH20 steel and EN 1.4825 stainless steel are iron alloys. They have 89% of their average alloy composition in common.

For each property being compared, the top bar is ACI-ASTM CH20 steel and the bottom bar is EN 1.4825 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
150
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 38
17
Fatigue Strength, MPa 290
160
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 610
510
Tensile Strength: Yield (Proof), MPa 350
260

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 440
410
Maximum Temperature: Mechanical, °C 1100
900
Melting Completion (Liquidus), °C 1410
1410
Melting Onset (Solidus), °C 1430
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 14
15
Thermal Expansion, µm/m-K 15
16

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 20
15
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.7
3.1
Embodied Energy, MJ/kg 53
43
Embodied Water, L/kg 180
140

Common Calculations

PREN (Pitting Resistance) 25
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
72
Resilience: Unit (Modulus of Resilience), kJ/m3 300
170
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
18
Strength to Weight: Bending, points 21
18
Thermal Diffusivity, mm2/s 3.7
4.0
Thermal Shock Resistance, points 15
12

Alloy Composition

Carbon (C), % 0 to 0.2
0.15 to 0.35
Chromium (Cr), % 22 to 26
17 to 19
Iron (Fe), % 54.7 to 66
65.6 to 74.4
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 12 to 15
8.0 to 10
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0.5 to 2.5
Sulfur (S), % 0 to 0.040
0 to 0.030