Austenitic Stainless Steel Bolts

904L Bolts

904L Bolts
Product Details

BDF can offer you good quality 904L hex head bolts, 904L socket head/allen bolts, 904L hex cap screws, 904L hex heavy bolts… in full thread or half thread. Our standards/specifications covers ASTM, ASME, DIN, ISO. Such as DIN933, DIN931, DIN912, ISO4014, ISO4017, ASME/AISI 18.2.1 etc. We can also manufacture all shapes of non-standard hastelloy bolts according to customers’ drawing. BDF is able to produce a wide range of sizes bolts by cold or hot forging. The diameter of bolts ranges from M6-M80 in Metric and 5/16” to 3 1/2” in Inch, and length can be up to 1000mm for bolts.


904L steel has a high resistance to pitting corrosion. Its crevice corrosion resistance is also good in chloride solutions. The high nickel content of 904L reduces the corrosion rate at pits and crevices. Normal austenitic stainless steels may be sensitive to stress corrosion in a chloride-rich environment at temperatures above 60 degrees Celsius. This sensitization can be reduced by increasing the nickel content of the stainless steel. Due to the high nickel content, 904L has high resistance to stress corrosion cracking in chloride solutions, concentrated hydroxide solutions, and hydrogen sulfide-rich environments.


Application area:

* Petroleum, petrochemical equipment, such as reactors in petrochemical equipment.

* Sulfuric acid storage and transportation equipment, such as heat exchangers.

* Power plant flue gas desulfurization equipment, the main use of parts: absorption tower tower, flue, stall    door, internal parts, spray systems.


chemical composition

C≤

Si≤

Mn≤

P≤

S≤

Cr≥

Ni≥

Mo≥

N≤

0.02

1.00

2.00

0.045

0.035

19.0-23.0

23.0-28.0

4.00-5.00

-

其他

Cu≤

Fe≤

Al≤

Ti≤

Co≤

Nb≤

W≤

V≤

1.0-2.0

余量

0.10

-

-

-

-

-


Mechanical behavior:


Density

8.24g/cm3

Melting point

1300-1390

yield strength

σ0.2 216Mpa

elongation

δ   35%.

tensile strength

σb 520Mpa


If our 904l bolts caters to your requirement, welcome to contact our professional manufacturers and suppliers. Highly qualified products, competitive price and good after-sale service can be assured.
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