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EN 1.4305 Stainless Steel vs. EN 1.4749 Stainless Steel

Both EN 1.4305 stainless steel and EN 1.4749 stainless steel are iron alloys. They have 90% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4305 stainless steel and the bottom bar is EN 1.4749 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 270
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 14 to 40
16
Fatigue Strength, MPa 190 to 330
190
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
80
Shear Strength, MPa 420 to 550
370
Tensile Strength: Ultimate (UTS), MPa 610 to 900
600
Tensile Strength: Yield (Proof), MPa 220 to 570
320

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 930
1100
Melting Completion (Liquidus), °C 1420
1420
Melting Onset (Solidus), °C 1380
1380
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 16
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 15
13
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 3.0
2.5
Embodied Energy, MJ/kg 42
36
Embodied Water, L/kg 140
160

Common Calculations

PREN (Pitting Resistance) 19
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 190
80
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 830
250
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 22 to 32
22
Strength to Weight: Bending, points 20 to 27
21
Thermal Diffusivity, mm2/s 4.0
4.6
Thermal Shock Resistance, points 14 to 20
22

Alloy Composition

Carbon (C), % 0 to 0.1
0.15 to 0.2
Chromium (Cr), % 17 to 19
26 to 29
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 66.4 to 74.9
68.5 to 73.7
Manganese (Mn), % 0 to 2.0
0 to 1.0
Nickel (Ni), % 8.0 to 10
0
Nitrogen (N), % 0 to 0.1
0.15 to 0.25
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0.15 to 0.35
0 to 0.015