Stainless Steel Spring Wire

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Stainless Steel Wire
Stainless Steel Spring Wire

Key Points of the Stainless Steel Spring Wire
All of the stainless steel spring wire produced by Fasten is manufactured according to EN-10270-3, ASTM, JIS WPB, JIS WPA, and WPC specifications. We have the production capabilities to provide customers with custom specifications.

Applications
Springs are most commonly produced from 302/304 stainless steel wire due to its excellent mechanical properties and corrosion resistance. Type 316 is recommended for springs with additional requirements in regards to corrosive exposure and because of its non-magnetic properties. The mechanical properties of this type of steel are not as strong or durable as 302/304 however. Type 631J1/631 steel is used for heat resistant spring production and high tensile strength after they undergo a heat treatment process.

Technical Parameters

Size (mm)	Tensile Strength (T/S)
	JIS-WPA	ASTM	JIS-WPB	ASTM	JIS-WPC	ASTM
	SUS-302 SUS-304 SUS-316	316	SUS-302 SUS-304	302 Class 304	SUS-631J1	631 COLD DRAWN CONDITION
0.08-0.20	1650-1900	1690-1895	2150-2400	2240-2450	1950-2200
0.23-0.40	1600-1850	1655-1860	2050-2300	2205-2330	1930-2180	2035
0.45-0.60	1600-1850	1620-1825	1950-2200	2070-2220	1850-2100	1965
0.60-1.00	1530-1780	1520-1825	1850-2100	1995-2095	1800-2050	1895
1.20-1.40	1450-1700	1550-1760	1750-2000	1840-2020	1700-1950	1825
1.60-2.00	1400-1650	1480-1655	1650-1900	1735-1895	1600-1850	1770
2.30-2.60	1320-1570	1380-1585	1550-1800	1640-1805	1500-1750	1670
2.90-4.00	1230-1480	1275-1450	1450-1700	1530-1620	1400-1650	1625
4.50-6.00	1100-1350	1105-1275	1350-1600	1335-1475	1300-1550	1545

Product Grade		Chemical Composition (%)
AISI	SUS	C	Si	Mn	P	S	Ni	Cr	Other
302	302	0.15MAX	1	2	0.045	0.03	8-10	17-19	-
304	304	0.08MAX	1	2	0.045	0.03	8-10.5	18-20	-
316	316	0.08MAX	1	2	0.045	0.03	10-14	16-18	Mo: 2-3
613	631J1	0.09MAX	1	1	0.04	0.03	6.5-8.5	16-18	Al：0.75-1.5
		0.15MAX	1	7.5-10	0.06	0.03	4.0-6.0	17.0-19.0	N: ≤0.25