Ningbo Huayuan Metal Products Co., Ltd.
| Payment Terms | T/T, L/C, D/A, D/P, Western Union, MoneyGram |
| Supply Ability | 500tons per month |
| Delivery Time | 1-15 days |
| Packaging Details | coil, spool with plate. |
| Material | 200 300 400 |
| Surface | Bright |
| Coil inner diameter | 250-1000mm |
| Standard | JIS G. EN. ASTM. DIN. GB etc |
| Packing | Coil or special packing with plate |
| status | Full hard |
| Brand Name | Toponewire |
| Model Number | 200 300 400 |
| Certification | ISO9001:2015 |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T, L/C, D/A, D/P, Western Union, MoneyGram | Supply Ability | 500tons per month |
| Delivery Time | 1-15 days | Packaging Details | coil, spool with plate. |
| Material | 200 300 400 | Surface | Bright |
| Coil inner diameter | 250-1000mm | Standard | JIS G. EN. ASTM. DIN. GB etc |
| Packing | Coil or special packing with plate | status | Full hard |
| Brand Name | Toponewire | Model Number | 200 300 400 |
| Certification | ISO9001:2015 | Place of Origin | China |
| High Light | spring tempered stainless steel wire ，ss spring wire | ||
stainless steel spring wire for Sealing coil spring / auto accessories
General Properties
302 is a variations of the 18% chromium / 8% nickel austenitic alloy, which is the most familiar and the most frequently used in the stainless steel family. Alloy 302 is a slightly higher carbon version of 304, often found in strip and wire forms. It is a tough, ductile grade that demonstrates comparable corrosion resistance, is non-magnetic, and is not hardenable by heat treatment. Alloy 302 is usually used in its annealed condition and has a high ease of fabrication and formability.
Chemical Properties:
| C | Mn | Si | P | S | Cr | Ni | N | |
| 302 | max: 0.15 | max:2.0 | max: 0.75 | max: 0.045 | max: 0.03 | min: 17.0 max: 19.0 | min: 8.0 max: 10.0 | max: 0.10 |
Mechanical Properties:
| Grade | Tensile Strength ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (Rockwell B) MAX |
| 302 | 75 | 30 | 40 | 92 |
Physical Properties:
| Density lbm/in3 |
Thermal Conductivity (BTU/h ft. °F) |
Electrical Resistivity (in x 10-6) |
Modulus of Elasticity (psi x 106 |
Coefficient of Thermal Expansion (in/in)/ °F x 10-6 |
Specific Heat (BTU/lb/ °F) |
Melting Range (°F) |
| at 68°F: 0.285 | 9.4 at 212°F | 72.0 at 70°F | 28 | 9.6 at 32 – 212°F | 0.1200 at 32°F to 212°F | 2500 to 2590 |
| 12.4 at 932 °F | 10.2 at 32 – 1000°F | |||||
| 10.4 at 32 – 1500°F |
Corrosion Resistance
1,Provides useful resistance to corrosion on a wide range of moderately oxidizing to moderately reducing environments
2,The 18 -19% of chromium which this alloy contains provides resistance to oxidizing environments such as dilute nitric acid.
3,Resistant to moderately aggressive organic acids such as acetic, and reducing acids such as phosphoric.
4,’The 9-11% of nickel contained in this alloy provides resistance to moderately reducing environments.
Machinability
Slow speeds and high feeds will overcome this alloy’s tendency to work-harden
Due to gummy chips, it is recommended that chip breakers are used on all tooling
Weldability
Can best be welded by resistance or shielded fusion methods
Post weld annealing dissolves the chromium carbide and is recommended for maximum resistance to intergranular attack
Hot Working
Uniform heating to 2100oF will allow this allow to be forged, upset and headed successfully
Do not work below 1700oF
Cold Working
Will dramatically increase the hardness of this material; however, it is quite ductile and may readily be drawn, spun and upset
Causes alloy 302 to become magnetic
Post-fabrication annealing is necessary to retain maximum corrosion resistance and a non-magnetic condition
Company Details
Business Type:
Manufacturer,Exporter,Trading Company
Year Established:
1993
Total Annual:
>30,000,000
Employee Number:
>200
Ecer Certification：
Active Member
Toponewire is one of the largest stainless steel production manufacturer in Mainland. We have been active in the production, processing and supplying of stainless steel productions to industries for over 20 years. As a leading supplier of stainless steel p... Toponewire is one of the largest stainless steel production manufacturer in Mainland. We have been active in the production, processing and supplying of stainless steel productions to industries for over 20 years. As a leading supplier of stainless steel p...
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