ASTM 347 - EN 1.4550

Type 347 is an austenitic chromium stainless steel with high carbon content. Alloy 347, 1.4550 is a stabilized stainless steel which offers superior protection from intergranular corrosion after being exposed to temperatures within the chromium carbide precipitation range of 427-816°C (800-1500°F).

Standard: ASTM, AISI, DIN, EN, GB, JIS

Technique: Hot Rolled/Cold Rolled/Galvnized

Processing Service: Welding, Punching, Cutting

Available Size Range: Click here

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Core 347/4550 is a niobium stabilized alternative Core 321/4541 with improved intergranular corrosion resistance and good mechanical properties at high temperatures. Core 347/4550 is particularly useful in applications with intermittent heating in the range 400–900 °C/750–1650 °F. Core 347/4550 is an austenitic stainless steel that belongs to the standard CrNi stainless steels. Core 347/4550 can be welded in all dimensions without becoming susceptible to intergranular corrosion.

The austenitic CrNi standard grades are the most widely used group of stainless steels. Their well-balanced material properties make them suitable for the fabrication of many products.

Equivalent grades	• ASTM 347 • DIN 1.4550 • UNS S34700 • X6CrNiNb18-10
Chemical Composition Reference	0.05C-0.14N-17.5Cr-9.5Ni-Nb
Physical Property Reference	• Density: 7.9 kg/m³ • Tensile Strength: 595 MPa • Yield Strength: 200 MPa • Modulus of Elasticity: 200 GPa • Thermal exp.at 100°C: 16 10-6/°C • Thermal Conductivity: 15 W/m°C
Stock & Dimensions	Our warehouse has a large number of stock to provide you with a variety of products in different sizes, and can also customize the size according to your needs. • Bar: 0.5~600mm Diameter • Coil: 0.5~150mm Thick • Plate: 0.5~200mm Thick • Pipe: 6~630mm External Diameter; 0.5~40mm Wall Tick • Available in specific sizes
Product Forms	We provide you with a variety of product forms, including but not limited to: Bar/Rod, Pipe/Tube, Coil/Strip, Plate/Sheet/Circle, Wire, Fitting (Flange, Elbow, Tee...),Customize

Typical Applications:

- High temperature gaskets

- Rocket engine parts

- Expansion joints

- Aircraft collector rings

- Exhaust manifolds

- Chemical production equipment

- Flanges and valves

ASTM 347 - EN 1.4550

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