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904L Springs
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We could produce 904L springs,904 L springs,904 L Compression Springs,904L Extension Springs,904L Torsion Springs,904 L tension spring, 904L disc spring, 904L wave spring,904 L Spiral Springs,904L Automotive Springs,904L Elevator Springs,904L coil springs,904L Conical Springs,904L Tapered Springs,904L Barrel Springs,904 L die springs,904 L Constant Force Springs,904 L Power Springs,904 L Garter Springs,904L retaining Springs,904L Volute Springs,904L flat springs,904L Volute Springs,904L battery springs,904L Spring Clips,904L Battery Contacts from china
The diameter of 904L springs that we could do range from 0.30 mm to 3.00 mm.
Our 904L springs come in a variety of surface finishes from bluing to clear or yellow zinc electroplating, electrolytic nickel, powder coating and zinc phosphate coating always executed by specialized subcontractors
At the end of the manufacturing and stress relief cycles, clients require different and very specific types of treatments in order to improve 904L spring performance. Terminal coil grinding, spring setting, internal and external tumbling, shot peen and vibration are the most common ones.
904L is an austenitic stainless steel, the same sort of heat treatment may be used.

The chemical composition of 904 L springs is as follows

C
≤ %

Si
≤ %

Mn
≤ %

P
≤ %

S
≤ %

Cr
%

Mo
%

Ni
%

V

0,02

0,70

2,0

0,030

0,010

19,0-21,0

4,0-5,0

24,0-26,0

Nb

Ti

Al

Co

Cu
%

N
≤ %

Fe

1,20-2,00

0,15




The mechanical property of 904L spring is as follows

0.2% proof stress
(PSI)

Tensile strength
(PSI)

Elongation
(%)

Hardness
(HRB)

≥ 31900

≥71050

≥ 35

≤ 90


We could do solution treatment and ageing treatment for 904L springs as per the requirement of the clients.
We could supply inspection certificate of 904L springs by third party,like TUV,DNV,GL,BV,SGS and so on
In order to control the quality of 904 L springs, we have following inspection equipment:Magnetic Particle Flaw Detector,Hot Coil Spring Production Line.Fatigue Testing Machine,Hardening Furnace,Optical Emission Spectrometry,Spring Coiler,Salt Spray Test Machine,Shot Blaster Machine,Automatic Spring Coiler,Electric Temper Furnace,Electric Temper Furnace,Automatic Spring Coiler,Pressure Testing Machine 20mm CNC Spring Coiler,Spring Grinder,Pressure Testing Machine
Our 904 L springs are widely used in automotive, railroad, wind energy, construction equipment, mining machinery, medical equipment, aerospace, defense, general machinery etc

Please send us the drawing of 904L springs that you need, we are glad to quote the best price for your side.
Except 904L Springs,we also could produce 904L flanges,904L plates,904L fasteners,904L bolts,904L pipe fittings,904L pipes,904L tubes,904L bars