Type302 Stainless Steel Spring Wires

Stainless Steel Spring Wire, Stainless Steel Wire & Rod

Products

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	1450-1700	1750-2000	1700-1950	1420-1670	1826	1840-2020
1.40 < d ≤ 1.60	1400-1650	1650-1900	1600-1850	1370-1620	1770	1735-1895
1.60 < d ≤ 2.00	1400-1650	1650-1900	1600-1850		1770	1735-1895
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
	Spools or coils	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: