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EN 1.4655 Stainless Steel vs. EN 1.4749 Stainless Steel

Both EN 1.4655 stainless steel and EN 1.4749 stainless steel are iron alloys. They have a moderately high 93% 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 EN 1.4655 stainless steel and the bottom bar is EN 1.4749 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 23 to 25
16
Fatigue Strength, MPa 320
190
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 78
80
Shear Strength, MPa 460
370
Tensile Strength: Ultimate (UTS), MPa 720 to 730
600
Tensile Strength: Yield (Proof), MPa 450 to 480
320

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 440
450
Maximum Temperature: Mechanical, °C 1050
1100
Melting Completion (Liquidus), °C 1420
1420
Melting Onset (Solidus), °C 1370
1380
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 13
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 15
13
Density, g/cm3 7.7
7.6
Embodied Carbon, kg CO2/kg material 2.9
2.5
Embodied Energy, MJ/kg 41
36
Embodied Water, L/kg 160
160

Common Calculations

PREN (Pitting Resistance) 26
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 160
80
Resilience: Unit (Modulus of Resilience), kJ/m3 510 to 580
250
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 26
22
Strength to Weight: Bending, points 23
21
Thermal Diffusivity, mm2/s 4.0
4.6
Thermal Shock Resistance, points 20
22

Alloy Composition

Carbon (C), % 0 to 0.030
0.15 to 0.2
Chromium (Cr), % 22 to 24
26 to 29
Copper (Cu), % 1.0 to 3.0
0
Iron (Fe), % 63.6 to 73.4
68.5 to 73.7
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0.1 to 0.6
0
Nickel (Ni), % 3.5 to 5.5
0
Nitrogen (N), % 0.050 to 0.2
0.15 to 0.25
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015