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EN 1.4749 Stainless Steel vs. AISI 204 Stainless Steel

Both EN 1.4749 stainless steel and AISI 204 stainless steel are iron alloys. They have 88% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4749 stainless steel and the bottom bar is AISI 204 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
210 to 330
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 16
23 to 39
Fatigue Strength, MPa 190
320 to 720
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
77
Shear Strength, MPa 370
500 to 700
Tensile Strength: Ultimate (UTS), MPa 600
730 to 1100
Tensile Strength: Yield (Proof), MPa 320
380 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 450
410
Maximum Temperature: Mechanical, °C 1100
850
Melting Completion (Liquidus), °C 1420
1410
Melting Onset (Solidus), °C 1380
1370
Specific Heat Capacity, J/kg-K 490
480
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 9.6
17

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 13
10
Density, g/cm3 7.6
7.7
Embodied Carbon, kg CO2/kg material 2.5
2.4
Embodied Energy, MJ/kg 36
35
Embodied Water, L/kg 160
130

Common Calculations

PREN (Pitting Resistance) 31
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
240 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 250
360 to 2940
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 22
27 to 40
Strength to Weight: Bending, points 21
24 to 31
Thermal Diffusivity, mm2/s 4.6
4.1
Thermal Shock Resistance, points 22
16 to 24

Alloy Composition

Carbon (C), % 0.15 to 0.2
0 to 0.030
Chromium (Cr), % 26 to 29
15 to 17
Iron (Fe), % 68.5 to 73.7
69.6 to 76.4
Manganese (Mn), % 0 to 1.0
7.0 to 9.0
Nickel (Ni), % 0
1.5 to 3.0
Nitrogen (N), % 0.15 to 0.25
0.15 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030