1.4948 – UNS S 30409 – 304H

1.4948 – UNS S 30409 – 304H2018-06-18T09:06:26+00:00

1.4948

  • 304H
  • S 30409

Most Widely Used Austenitic Stainless Steel Modified with a Controlled Carbon Chemistry for Increased Strength to 1500°F (816°C).Excellent heat resistance in raised temperatures.

Mechanical Properties

Tensile strength:500-700N/mm²
Yield strength 0,2% :230≥ N/mm²
Elongation:40≥ %
Hardness HB30:201≤ HB

Chemical Composition

Carbon

C

0,04-0,08% max

Silicon

Si

1,00% max

Magnese

Mn

2% max

Phosphorus

P

0,035% max

Sulphur

S

0,015% max

Chromium

Cr

17,0-19,0%

Nickel

Ni

8,0-11,0% max

Heat Treatment

1040°C followed by water quenching

It resists atmospheric corrosion, as well as, moderately oxidizing and reducing environments. However, because of its high carbon content, Alloy 304/304H is subject to carbide precipitation in the heat affected zone of welds.

It can be easily welded and processed by standard shop fabrication practices.

Marking

All material will be marked as follow:

  • Manufacturer’s name
  • Material grade
  • Size
  • Heat Number

Certification

Material will be delivered with certificate EN 10204 3.1

products

Pipes, piping material

pipes

Flanges, piping material

flanges

Fittings, piping material

fittings

Plates, piping material

plates

Round Bar, piping material

bars

Forged Fittings, piping material

forged fittings