Products
Contact Us
- F9,NO. 1555 Lianhua Road, Minhang District, Shanghai, China
- 86 21 56068180
- Allinmetal
- sales@allinmetalgroup.com
Our Office
- No.214,Shacheng Town,Longwan District,Wenzhou City,China
- sales@allinmetal.cn
Our Factory
Type302 Stainless Steel Spring Wires
- Standard：ASTM A313
- Material：302
- Surface：Soap Coated
- Techinque：cold drawn
302 spring wires
ALLIN METAL’S Stainless Steel Wire for Springs are manufactured having excellent mechanical properties (surface, cast & helix) manufactured under strict guidance of technical personnel.
Surface Condition ; Soap Coated (S-Co) , Bright (Br) , Nickel Coated (Ni-Co) , Nickel Bright (Ni-Br) , Mat (Dull)
| Wire Diameter | Tensile Strength (Mpa)(N/mm2) | |||||
| d(mm) | JIS Standard | ASTM Standard | ||||
| Calsss A | Class B | Class C | Class D | ASTM | ASTM | |
| SUS302-WPA SUS304-WPA SUS316-WPA | SUS302-WPB SUS304-WPB SUS304-WPBS |
SUS631J1-WPC | SUS304-WPDS | 631 | 302Class1 304 | |
| 0.29≤ d ≤ 0.40 | 1600-1850 | 2050-2300 | 1930-2180 | 1700-2000 | 2032 | 2205-2330 |
| 0.40 < d ≤ 0.60 | 1600-1850 | 1950-2200 | 1850-2100 | 1650-1950 | 1965 | 2070-2220 |
| 0.60 < d ≤ 0.70 | 1530-1780 | 1850-2100 | 1800-2050 | 1550-1850 | 1895 | 1995-2095 |
| 0.70 < d ≤ 0.90 | 1550-1800 | |||||
| 0.90 < d ≤ 1.00 | 1500-1750 | |||||
| 1.00 < d ≤ 1.20 | 1450-1700 | 1750-2000 | 1700-1950 | 1470-1720 | 1826 | 1840-2020 |
| 1.20 < d ≤ 1.40 | 1420-1670 | |||||
| 1.40 < d ≤ 1.60 | 1400-1650 | 1650-1900 | 1600-1850 | 1370-1620 | 1770 | 1735-1895 |
| 1.60 < d ≤ 2.00 | ||||||
| 2.00 < d ≤ 2.60 | 1320-1570 | 1550-1800 | 1500-1750 | 1670 | 1640-1805 | |
| 2.60 < d ≤ 4.00 | 1230-1480 | 1450-1700 | 1400-1650 | 1625 | 15601670 | |
| 4.00 < d ≤ 6.00 | 1100-1350 | 1350-1600 | 1300-1550 | 1545 | 1335-1475 | |
| Stainless Steel Spring Wire(321&347) -ASTM Standard | |
| Wire Diameter | Tensile Strength |
| d(mm) | N/mm2(Mpa) |
| 0.25 < d ≤ 0.38 | 1655-1860 |
| 0.38 < d ≤ 0.61 | 1620-1825 |
| 0.61 < d ≤ 1.04 | 1620-1825 |
| 1.04 < d ≤ 1.19 | 1585-1790 |
| 1.19 < d ≤ 1.37 | 1550-1760 |
| 1.37 < d ≤ 1.57 | 1515-1725 |
| 1.37 < d ≤ 1.57 | 1480-1690 |
| 1.37 < d ≤ 1.57 | 1450-1655 |
| 1.37 < d ≤ 1.57 | 1415-1620 |
| 1.37 < d ≤ 1.57 | 1380-1585 |
| 2.67 < d ≤ 3.05 | 1345-1550 |
| 3.05 < d ≤ 3.76 | 1275-1480 |
| 3.76 < d ≤ 4.22 | 1240-1450 |
| 4.22 < d ≤ 4.50 | 1170-1380 |
| 4.50 < d ≤ 5.26 | 1105-1310 |
| 5.26 < d ≤ 5.72 | 1070-1275 |
| 5.72 < d ≤ 6.35 | 1035-1240 |
| Nominal diameter(d)(mm) | Diameter Tolerance(mm) | ||
| Spools or coils | Cut lengths | ||
| Lower tolerance | upper tolerance | ||
| d< 0.21 | ± 0,005 | – 0,005 | + 0,009 |
| 0.21 ≤ d < 0.26 | ± 0,005 | – 0,005 | + 0,009 |
| 0.26 ≤ d < 0.41 | ± 0,008 | – 0,008 | + 0,018 |
| 0.41 ≤ d < 0.65 | ± 0,008 | – 0,008 | + 0,018 |
| 0.65 ≤ d < 0.81 | ± 0,010 | – 0,010 | + 0,025 |
| 0.81 ≤ d < 1.01 | ± 0,010 | – 0,010 | + 0,025 |
| 1.01 ≤ d < 1.61 | ± 0,015 | – 0,015 | + 0,040 |
| 1.61 ≤ d < 2.26 | ± 0,015 | – 0,015 | + 0,050 |
| 2.26 ≤ d < 3.20 | ± 0,020 | – 0,020 | + 0,070 |
| 3.20 ≤ d < 4.01 | ± 0,020 | – 0,020 | + 0,080 |
| 4.01 ≤ d < 4.51 | ± 0,025 | – 0,025 | + 0,100 |
| 4.51 ≤ d < 6.01 | ± 0,025 | – 0,025 | + 0,120 |
| 6.01 ≤ d < 6.26 | ± 0,025 | – 0,025 | + 0,120 |
| 6.26 ≤ d < 7.01 | ± 0,030 | – 0,030 | + 0,135 |
| 7.07 ≤ d < 9.01 | ± 0,030 | – 0,030 | + 0,160 |
| 9.01 ≤ d <10.00 | ± 0,035 | – 0,035 | + 0,185 |
| Raw materials & Chemical Composents： | ||||||||||
| Grade | Chemical Compositon(%) | |||||||||
| Type | C | Si | Mn | P | S | Ni | Cr | Mo | Cu | Other |
| SUS302 | 0.15 | 1.00 | 2.00 | 0.045 | 0.03 | 8.0-10.0 | 17.0-19.0 | |||
| SUS304 | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 8.0-10.0 | 18.0-20.0 | |||
| SUS316 | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 10.0-14.0 | 16.0-18.0 | 2.0-3.0 | ||
| 321 | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 9.0-13.0 | 17.0-19.0 | Ti≥5×C% | ||
| 347 | 0.08 | 1.00 | 2.00 | 0.045 | 0.03 | 9.0-13.0 | 17.0-19.0 | Nb≥10×C% | ||
| SUS631(J1) | 0.09 | 1.00 | 1.00 | 0.04 | 0.03 | 6.5-8.5 | 16.0-18.0 | Al: 0.75–1.5 | ||
ALLIN METAL’S Quality Control for Stainless Steel Spring Wires:
●All Stainless spring wires are manufactured to a high and consistent quality including;
●Tensile strength – offering consistent spring forming capabilities.
●Surface finish and soap coating – to lubricate and aid the forming of the springs when running at high speeds through spring forming machines providing good spring coiling characteristics.
●Cast & helix – offering maximum product performance.
●The spring properties of stainless spring wires are obtained by precision cold drawing meaning the tensile strength of the spring wires are maintained at operating temperatures up to 250°C with stainless steel springs able to be used in reduced stress levels up to 450°C.
Application :
● Torsion spring
● Extension spring
● Compression spring
● Mattress spring
● Mechanical spring
● Aerosol valve spring:
