Supply is super-austenitic stainless steel 904L

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Origin:

China

Payment Method:

Telegraphic Transfer (T/T)

Quantity:

50000

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904L Specifications

Super austenitic stainless steel 904L is

High chromium content and nickel content enough, the addition of copper it has a strong acid capacity, particularly chloride crevice corrosion and stress corrosion cracking are highly resistant, excellent resistance to pitting and other steel slightly in the pulp and paper industry and chemical industry and so widely used.

Similar grades

United States: UNS N08904

Germany: W.Nr.1.4539

United Kingdom: 904S13

Applications

" sulfur, phosphorus and acetic acid treatment equipment

" Pulp and Paper Industry

" water cooling equipment

" Chemical Industry Machinery Manufacturing

Specifications

Plates, rods, strips, bolts, flanges, shafts, fasteners and other consultations, the supply of

Standard

ASTM B 625 ... ... ... ... .. ... plate, sheet

ASTM B 673 / 674 / 677 ... .... tube, pipe

ASTM A 182 / ANSI B 16.5 ... forging

Supply Status

Hot or cold, heat treatment, acid treatment or oxidation state

Corrosion resistance

Severe corrosion in a very high resistance, can resist the erosion of the following circumstances:
" erosion of hard spots and cracks appear

" resistance to particle erosion

" good compression

" common erosion
Chemical composition
Typical values (Weight%)

Cr
Ni
Mo
Fe
C
Si
Mn
P
Cu

¡Ü

19.0-23.0
23.0-28.0
4.0-5.0
I
0.02
1.0
2.0
0.03
1.0-2.0

Mechanical properties (solution treatment state)

Product
Yield strength

R0.2 / MPa
Tensile strength

R m / MPa
Elongation

¦Ä5 /%

Plate
220
490
35

Strip

Bar

Physical properties

Melting temperature range :850-1050 ¡æ

Specific Heat: 500 J / (kg ¡¤ ¡æ)

Density: 8.0 g/m3

Hardness :160-210 HV10

Process

Thermal processing

1. Temperature 1200 ¡æ ~ 900 ¡æ, cooling to water quenching or rapid air cooling.

2. Heating, the material can be directly sent to the maximum operating temperature has been heating up the stove, the heat enough time (per 100mm thickness of 60 minutes holding time) quickly released, the specified temperature range of high temperature thermal processing section. When the material temperature has dropped below the hot working temperature, the need to re-heating.

3. For best performance, thermal processing to be carried out after the solution treatment.

Cold

1. And all the same austenitic chromium-nickel stainless steel, alloy work hardening rate, so the need for the selection of processing equipment. Cold material should be solution heat treatment state, and the large amount of cold work should be carried out in the middle of annealing.

2. If the cold is greater than 15%, you need to carry out the second solution treatment on the workpiece.

Welding Technology

Suitable for any conventional welding process with the same kind of material or other metal welding, pulsed arc welding which is the preferred program.

Welding must be carried out in solution treatment state, and use stainless steel wire brush to clean dirt, dust and all kinds of signs. If the paste lining welding, to get the best quality, the operation must be very careful. Recommended in the matrix after the second step is carried out welding liner welding, also lined with some applications is to paste on the next step, depending on the actual situation. HAZ generated color to the welding zone without cooling, stainless steel brush to go.

Description: The technical information provided here is only the product description. In the inquiry or issue an order to provide us with a written document shall prevail.

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