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EN 1.4525 Stainless Steel vs. ACI-ASTM CD4MCu Steel

Both EN 1.4525 stainless steel and ACI-ASTM CD4MCu steel are iron alloys. They have 88% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4525 stainless steel and the bottom bar is ACI-ASTM CD4MCu steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 5.6 to 13
18
Fatigue Strength, MPa 480 to 540
340
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 1030 to 1250
770
Tensile Strength: Yield (Proof), MPa 840 to 1120
550

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 430
450
Maximum Temperature: Mechanical, °C 860
1100
Melting Completion (Liquidus), °C 1430
1430
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 18
17
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
18
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.8
3.5
Embodied Energy, MJ/kg 39
49
Embodied Water, L/kg 130
180

Common Calculations

PREN (Pitting Resistance) 18
32
Resilience: Ultimate (Unit Rupture Work), MJ/m3 68 to 130
130
Resilience: Unit (Modulus of Resilience), kJ/m3 1820 to 3230
760
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 36 to 45
28
Strength to Weight: Bending, points 29 to 33
24
Thermal Diffusivity, mm2/s 4.7
4.5
Thermal Shock Resistance, points 34 to 41
21

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.040
Chromium (Cr), % 15 to 17
24.5 to 26.5
Copper (Cu), % 2.5 to 4.0
2.8 to 3.3
Iron (Fe), % 70.4 to 79
59.9 to 66.3
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.8
1.8 to 2.3
Nickel (Ni), % 3.5 to 5.5
4.8 to 6.0
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.040