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Cold Rolled EN 1.4640 vs. Cold Rolled EN 1.4655

Both cold rolled EN 1.4640 and cold rolled EN 1.4655 are iron alloys. Both are furnished in the cold worked (strain hardened) condition. They have a moderately high 95% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is cold rolled EN 1.4640 and the bottom bar is cold rolled EN 1.4655.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 51
23
Fatigue Strength, MPa 250
320
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
78
Shear Strength, MPa 460
460
Tensile Strength: Ultimate (UTS), MPa 650
730
Tensile Strength: Yield (Proof), MPa 260
480

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 420
440
Maximum Temperature: Mechanical, °C 930
1050
Melting Completion (Liquidus), °C 1420
1420
Melting Onset (Solidus), °C 1380
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 14
15
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.8
2.9
Embodied Energy, MJ/kg 40
41
Embodied Water, L/kg 150
160

Common Calculations

PREN (Pitting Resistance) 20
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 260
150
Resilience: Unit (Modulus of Resilience), kJ/m3 170
580
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
26
Strength to Weight: Bending, points 21
23
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 15
20

Alloy Composition

Carbon (C), % 0.030 to 0.080
0 to 0.030
Chromium (Cr), % 18 to 19
22 to 24
Copper (Cu), % 1.3 to 2.0
1.0 to 3.0
Iron (Fe), % 67.4 to 73.6
63.6 to 73.4
Manganese (Mn), % 1.5 to 4.0
0 to 2.0
Molybdenum (Mo), % 0
0.1 to 0.6
Nickel (Ni), % 5.5 to 6.9
3.5 to 5.5
Nitrogen (N), % 0.030 to 0.11
0.050 to 0.2
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015