We could produce 309S springs,309 S springs,309 S Compression Springs,309S Extension Springs,309S Torsion Springs,309 S tension spring, 309S disc spring, 309S wave spring,309 S Spiral Springs,309S Automotive Springs,309S Elevator Springs,309S coil springs,309S Conical Springs,309S Tapered Springs,309S Barrel Springs,309 S die springs,309 S Constant Force Springs,309 S Power Springs,309 S Garter Springs,309S retaining Springs,309S Volute Springs,309S flat springs,309S Volute Springs,309S battery springs,309S Spring Clips,309S Battery Contacts from china
The diameter of 309S springs that we could do range from 0.30 mm to 3.00 mm.
Our 309S 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 309S spring performance. Terminal coil grinding, spring setting, internal and external tumbling, shot peen and vibration are the most common ones.
309S is Basically a controlled carbon version of type 309 stainless designed to improve the weld strength of the alloy while benefiting from the alloy's high resistance to heat and corrosion.
The chemical composition of 309 S springs is as follows
Element | Content (%) |
Iron | 60 |
Chromium | 23 |
Nickel | 14 |
Manganese | 2 |
Silicon | 1 |
Carbon | 0.080 |
Phosphorous | 0.045 |
Sulfur | 0.030 |
The mechanical property of 309S spring is as follows
Properties | Metric | Imperial |
Tensile strength, ultimate | 620 MPa | 89900 psi |
Tensile strength, yield (0.2%) | 310 MPa | 45000 psi |
Elongation at break (in 50 mm) | 45% | 45% |
Hardness, Brinell (converted from Rockwell B hardness) | 147 | 147 |
Hardness, Knoop (converted from Rockwell B hardness) | 164 | 164 |
Hardness, Rockwell B | 85 | 85 |
Hardness, Vickers (converted from Rockwell B hardness) | 169 | 169 |
We could do solution treatment and ageing treatment for 309S springs as per the requirement of the clients.
We could supply inspection certificate of 309S springs by third party,like TUV,DNV,GL,BV,SGS and so on
In order to control the quality of 309 S 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 Machine20mm CNC Spring Coiler,Spring Grinder,Pressure Testing Machine
Our 309 S springs are widely used in ANCILLARY INDUSTRIES,Alternative Fuel Systems,Research & Design Projects,Geothermal Power Plants,Wind Farm Maintenance ,Solar (Photovoltaics) Power Equipment ,Hydro-Electric Power Plant,Coal-fueled, Oil-fueled or Nuclear Power Plant Maintenance ,Natural Gas Storage & Plant Maintenance Boiler Systems ,Turbine Manufacturers ,Transmission, Distribution & Storage Equipment Manufacturers,Motors & Generators and so on
Please send us the drawing of 309S springs that you need, we are glad to quote the best price for your side.
Except 309S Springs,we also could produce 309S flanges,309S plates,309S fasteners,309S bolts,309S pipe fittings,309S pipes,309S tubes,309S bars
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