Coils

What Is Spring Steel ?

Spring steel refers to steel, ordinarily of the high carbon or alloy type, utilized within the manufacture of springs. The steel is handled by cold drawing, cold rolling, or heat treating to deliver it the flexible properties and yield quality required in springs. Spring steel is frequently utilized since of its high yield qualities, resistance to deformation, and its capacity to return to its unique shape. Our spring steel and spring steel strips are accessible as heat-treatable annealed, which permits the shaping to happen earlier to the heat treatment, or heat treated, where the steel is already solidified, tempered, or sprung. Our stock of annealed spring steel can be effectively shaped, tempered, heat treated, blanked or formed.

Spring Steel Coil Specification

Blue Tempered And Polished Spring Steel

- Grades: C1074/75, C1095

- Thickness in Stock: .002″ through .125″

- Widths in Stock: .125″ through 24″

Scaleless Tempered Spring Steel

- Grades: C1074/75

- Thickness in Stock: .008″ through .125″

- Widths in Stock: .125″ through 24″

Cold Rolled High Carbon Annealed Spring Steel

- Grades: C1050, C1074/75, C1095
- Thickness in Stock: .003″ through .250″
- Widths in Stock: .125″ through 60″

Types of Stainless Steel Coils

304 Stainless Steel Coils
304L Stainless Steel Coils
304H Stainless Steel Coils
309S Stainless Steel Coils
309H Stainless Steel Coils
310S Stainless Steel Coils
310H Stainless Steel Coils
316 Stainless Steel Coils
316Ti Stainless Steel Coils
316H Stainless Steel Coils
316LN Stainless Steel Coils
317 Stainless Steel Coils
317L Stainless Steel Coils
321 Stainless Steel Coils
321H Stainless Steel Coils
347 Stainless Steel Coils
347H Stainless Steel Coils
904L Stainless Steel Coils

Ready Stock Of Spring Steel Boning Coils, 1095 Blue Tempered Spring Steel Coils, Stainless Steel Spring Coil In Mumbai, India

Unique Properties Of Spring Steel

We carries annealed spring steel in three varieties, which are distinguished based on their carbon content:

1. AISI 1050 has the lowest carbon content, making it easily formable. It also can be heat treated in order to increase hardness.
2. AISI 1074 and 1075 have a medium carbon content that’s been spheroidized to increase its formability, and can be heat treated.
3. AISI 1095 has the highest carbon content of the spring steels we carry. It can be heat treated, and also has the highest elasticity and fatigue values.

Spring Steel Strip Coil Value Added Services

- Heat Treatment

- Annealed

- Cladding

- Pickling, Polish

- Rolling

- Cutting

- Bending

- Forging

- Minor Fabrication Etc.

Spring Steel Grades

12R11	(S30100)	(301)	1.4310	800-1900 (116-276)	2-345 (0.08-13.6)	0.015-3 (0.0006-0.12)
11R51	(S30100)	(301)	1.4310	1700-2050 (247-297)	2-345 (0.08-13.6)	0.015- 1.5 (0.0006-0.06)
13RM19	–	–	1.4369	850-1600 (123-232)	2-345 (0.08-13.6)	0.015-3 (0.0006-.12)
3R12*	S30403	304L	1.4306	600-1300 (87-189)	2-325 (0.08-12.8)	0.015-2 (0.0006-0.08)
2RK65 HV	N08904	904LVM	1.4539	*	*	*

Grade	UNS	ASTM	EN	Tensile strength MPa (ksi)	Width mm (in.)	Thickness mm (in.)
SAF 2507	S32750	–	1.4410	900-1600 (131-232)	2-300 (0.08-11.8)	0.015-3.5 (0.0006-0.14)
Springflex	UNS S32205, S31803	–	1.4462	1100-2200 (160-319)	2-300 (0.079 – 12)	0.03 – 3.51 (0.0012 – 0.14)

Grade	UNS	ASTM	EN	Tensile strength MPa (ksi)	Width mm (in.)	Thickness mm (in.)
9RU10	S17700	631	1.4568	1200-1700 (174-247)	2-360 (0.08-14.2)	0.015-3 (0.0006-0.12)
1RK95	S45500	–	–	1050-1500 (152-218)	10-330 (0.39-13.0)	1-3.5 (0.039-0.138)
Nanoflex	–	–	–	950-1850 (138-268)	2-330 (0.08-13)	0.015-2 (0.0006-0.08)
Sanicro 75X	N07750	–	–	750- 1350 (109-196)	2-200 (0.08-7.9)	0.015-4 (0.0006-0.16)

Grade	UNS	ASTM	EN	Tensile strength MPa (ksi)	Width mm (in.)	Thickness mm (in.)
Sanicro 75X	N07750	–	–	750- 1350 (109-196)	2-200 (0.08-7.9)	0.015-4 (0.0006-0.16)

Stainless Steel Spring Coil Dimension/Coil Weight :

Wire dia (in mm )	Coil Dimensions (in mm)I.D. (mm)O.D. (max.)		Approx. Coil weight (kgs.)
0.28 to 0.34	175	360	3 to 10
0.35 to 0.36	170	400	10 to 50
0.78 to 1.35	250	430	70 to 80
1.40 to 2.80	550	700	100 to 180
2.85 to 5.00	700	900	100 to 200

Spring Steel Coil Properties

The tables show the properties of our spring steel grades compared to the normally used ASTM 301. The more plus signs, the better the properties:

Property	+	++	+++	++++	+++++
Fatigue strength	–	–	12R111RK95	9RU10	11R51
Formability	–	–	9RU10	1RK95	Nanoflex
Non-magnetic	–	–	–	–	13RM19
Tensile strength (as delivered)	–	–	12R11	–	11R51
Corrosion resistance	–	12R119RU10	3R12Nanoflex11R51	Bioline 316LVM2RK65 HV	SAF 2507Sanicro 75X
Relaxation resistance	–	11R51	9RU10	1RK95	Nanoflex
Elevated temperature	–	–	11R51	Nanoflex1RK959RU10

Spring Steel Coil Sizes

Thickness	Width	Thickness tolerance, mm +/- Tolerance class
mm	mm	T1	T2	T3	T4
<0.025	-250 >250-400	0.003 0.004	0.002 0.003	0.0015 0.002	0.001 0.0015
0.025- <0.04	-250 >250-400	0.004 0.005	0.003 0.004	0.002 0.003	0.0015 0.002
0.04- <0.063	-250 >250-400	0.005 0.006	0.004 0.005	0.003 0.004	0.002 0.003
0.063- <0.1	-250 >250-400	0.006 0.007	0.005 0.006	0.004 0.005	0.003 0.004
0.1- <0.125	-250 >250-400	0.007 0.008	0.005 0.006	0.004 0.005	0.003 0.004
0.125- <0.16	-250 >250-400	0.009 0.01	0.006 0.007	0.005 0.006	0.004 0.005
0.16- <0.2	-250 >250-400	0.01 0.011	0.007 0.008	0.005 0.006	0.004 0.005
0.2- <0.25	-250 >250-400 >400-600	0.011 0.013 0.014	0.008 0.009 0.010	0.006 0.007 0.008	0.004 0.006 0.007
0.25- <0.315	-250 >250-400 >400-600	0.013 0.015 0.017	0.009 0.011 0.012	0.007 0.008 0.009	0.005 0.006 0.007
0.315- <0.4	-250 >250-400 >400-600	0.015 0.017 0.020	0.011 0.012 0.014	0.008 0.009 0.010	0.006 0.006 0.008
0.4- <0.5	-250 >250-400 >400-600	0.017 0.020 0.023	0.012 0.014 0.017	0.009 0.010 0.012	0.006 0.007 0.009
0.5- <0.63	-250 >250-400 >400-600	0.020 0.024 0.028	0.014 0.017 0.020	0.010 0.012 0.014	0.007 0.009 0.010
0.63- <0.8	-250 >250-400 >400-600	0.023 0.027 0.032	0.017 0.020 0.023	0.012 0.014 0.016	0.008 0.010 0.012
0.8- <1	-250 >250-400 >400-600	0.027 0.032 0.037	0.019 0.023 0.027	0.013 0.016 0.019	0.009 0.012 0.014
1- <1.25	-250 >250-400 >400-600	0.034 0.036 0.042	0.024 0.026 0.029	0.017 0.018 0.021	0.012 0.013 0.015
1.25- <1.6	-250 >250-400 >400-600	0.039 0.044 0.050	0.028 0.032 0.028	0.020 0.022 0.026	0.014 0.016 0.019
1.6- <2	-250 >250-400 >400-600	0.046 0.050 0.060	0.033 0.038 0.042	0.023 0.026 0.029	0.017 0.019 0.021
2- <2.5	-250 >250-400 >400-600	0.050 0.055 0.065	0.035 0.040 0.050	0.025 0.028 0.033	0.017 0.020 0.024
2.5- <3.15	-250 >250-400 >400-600	0.056 0.060 0.070	0.040 0.043 0.050	0.028 0.030 0.035	0.020 0.022 0.025
3.15- 5	-250 >250-400 >400-600	0.063 0.065 0.080	0.045 0.050 0.060	0.032 0.034 0.040	0.022 0.024 0.029

Thickness	Width	Thickness tolerance, mm +/- Tolerance class
mm	mm	B1	B2	B3	B4
<0.25	– <20 20- <50 50- <125 125- <250 250- <400 400- <600 600- <800	0.07 0.10 0.15 0.20 0.30 0.40 0.60	0.05 0.07 0.11 0.15 0.20 0.30 0.40	0.03 0.05 0.07 0.10 0.15 0.20 0.30	0.02 0.035 0.05 0.07 0.10 – –
0.25- <0.50	– <20 20- <50 50- <125 125- <250 250- <400 400- <600 600- <800	0.10 0.15 0.20 0.25 0.35 0.50 0.70	0.07 0.11 0.15 0.20 0.30 0.35 0.50	0.05 0.07 0.10 0.15 0.20 0.25 0.35	0.03 0.05 0.07 0.10 0.15 – –
0.50- <1.00	– <20 20- <50 50- <125 125- <250 250- <400 400- <600 600- <800	0.15 0.20 0.25 0.30 0.40 0.60 0.80	0.11 0.15 0.20 0.25 0.30 0.40 0.60	0.07 0.10 0.15 0.15 0.20 0.30 0.40	0.05 0.07 0.10 0.10 v15 – –
1.00- <1.60	– <20 20- <50 50- <125 125- <250 250- <400 400- <600 600- <800	0.20 0.25 0.30 0.35 0.45 0.70 0.90	0.15 0.20 0.25 0.25 0.35 0.50 0.60	0.10 0.15 0.15 0.20 0.25 0.35 0.40	0.07 0.10 0.10 0.15 0.20 – –
1.60- <2.00	– <20 20- <50 50- <125 125- <250 250- <400 400- <600 600- <800	0.25 0.30 0.35 0.40 0.50 0.70 0.90	0.20 0.20 0.30 0.30 0.35 0.50 0.60	0.15 0.15 0.20 0.20 0.25 0.35 0.40	0.10 0.10 0.15 0.15 0.20 – –
2.00- <2.50	– <20 20- <50 50- <125 125- <250 250- <400 400- <600 600- <800	0.35 0.35 0.40 0.45 0.55 0.80 1.00	0.25 0.25 0.30 0.35 0.40 0.60 0.70	0.20 0.20 0.20 0.25 0.30 0.40 0.50	0.15 0.15 0.15 0.20 0.25 – –
2.50- <4.00	– <20 20- <50 50- <125 125- <250 250- <400 400- <600 600- <800	– 0.40 0.45 0.50 0.60 0.80 1.00	– 0.30 0.30 0.35 0.40 0.60 0.70	– 0.20 0.20 0.25 0.30 0.40 0.50	– 0.15 0.15 0.20 0.25 – –

Thickness	Width	Thickness tolerance, in. +/- Tolerance class
in.	in.	T1	T2	T3	T4
-<.0010	-9.8 >9.8- 15.7	.00012 .00016	.00008 .00012	.00006 .00008	.00004 .00006
.0010- <.0016	-9.8 >9.8- 15.7	.00016 .00020	.00012 .00016	.00008 .00012	.00006 .00008
.0016- <.0025	-9.8 >9.8- 15.7	.00020 .00024	.00016 .00020	.00012 .00016	.00008 .00012
.0025- <.0039	-9.8 >9.8- 15.7	.00024 .00028	.00020 .00024	.00016 .00020	.00012 .00016
.0039- <.0049	-9.8 >9.8- 15.7	.00028 .00031	.00020 .00024	.00016 .00020	.00012 .00016
.0049- <.0063	-9.8 >9.8- 15.7	.00035 .00039	.00024 .00028	.00020 .00024	.00016 .00020
.0063- <.0079	-9.8 >9.8- 15.7	.00039 .00043	.00028 .00031	.00020 .00024	.00016 .00020
.0079- <.0098	-9.8 >9.8- 15.7 >15.7- 23.6	.00043 .00051 .00055	.00031 .00035 .00039	.00024 .00028 .00031	.00016 .00024 .00028
.0098- <.0124	-9.8 >9.8- 15.7 >15.7- 23.6	.00051 .00059 .00067	.00035 .00043 .00047	.00028 .00031 .00035	.00020 .00024 .00028
.0124- <.0157	-9.8 >9.8- 15.7 >15.7- 23.6	.00059 .00067 .00079	.00043 .00047 .00055	.00031 .00035 .00039	.00024 .00024 .00031
.0157- <.0197	-9.8 >9.8- 15.7 >15.7- 23.6	.00067 .00079 .00091	.00047 .00055 .00067	.00035 .00039 .00047	.00024 .00028 .00035
.0197- <.0248	-9.8 >9.8- 15.7 >15.7- 23.6	.00079 .00094 .00110	.00055 .00067 .00079	.00039 .00047 .00055	.00028 .00035 .00039
.0248- <.0315	-9.8 >9.8- 15.7 >15.7- 23.6	.00091 .00106 .00126	.00067 .00079 .00091	.00047 .00055 .00063	.00031 .00039 .00047
.0315- <.0394	-9.8 >9.8- 15.7 >15.7- 23.6	.00106 .00126 .00146	.00075 .00091 .00106	.00051 .00063 .00075	.00035 .00047 .00055
.0394- <.0492	-9.8 >9.8- 15.7 >15.7- 23.6	.00134 .00142 .00165	.00094 .00102 .00114	.00067 .00071 .00083	.00047 .00051 .00059
.0492- <.0630	-9.8 >9.8- 15.7 >15.7- 23.6	.00153 .00173 .00197	.00110 .00126 .00150	.00079 .00087 .00102	.00055 .00063 .00075
.0630- <.0787	-9.8 >9.8- 15.7 >15.7- 23.6	.00181 .00197 .00236	.00130 .00150 .00165	.00091 .00102 .00114	.00067 .00075 .00083
.0787- <.0984	-9.8 >9.8- 15.7 >15.7- 23.6	.00197 .00216 .00256	.00138 .00157 .00197	.00098 .00110 .00130	.00067 .00079 .00094
.0984- <1.240	-9.8 >9.8- 15.7 >15.7- 23.6	.00220 .00236 .00276	.00157 .00169 .00197	.00110 .00018 .00138	.00079 .00087 .00098
1.240- <1.969	-9.8 >9.8- 15.7 >15.7- 23.6	.00248 .00256 .00315	.00177 .00197 .00236	.00126 .00134 .00157	.00087 .00094 .00114

Thickness	Width	Thickness tolerance, in. +/- Tolerance class
in.	in.	B1	B2	B3	B4
– <.0098	– <.79 .79- <1.97 1.97- <4.9 4.9- <9.8 9.8- <15.7 15.7- <23.6 23.6- <31.5	.0028 .0039 .0059 .0079 .0118 .0157 .0236	.0020 .0028 .0043 .0059 .0079 .0118 .0157	.0012 .0020 .0028 .0039 .0059 .0079 .0118	.0008 .0014 .0020 .0028 .0039 – –
.0098- <.0197	– <.79 .79- <1.97 1.97- <4.9 4.9- <9.8 9.8- <15.7 15.7- <23.6 23.6- <31.5	.0039 .0059 .0079 .0098 .0138 .0197 .00276	.0028 .0043 .0059 .0079 .0118 .0138 .0197	.0020 .0028 .0039 .0059 .0079 .0098 .0138	.0012 .0020 .0028 .0039 .0059 – –
.0197- <.0394	– <.79 .79- <1.97 1.97- <4.9 4.9- <9.8 9.8- <15.7 15.7- <23.6 23.6- <31.5	.0059 .0079 .0098 .0118 .0157 .0236 .0315	.0043 .0059 .0079 .0098 .0118 .0157 .0236	.0028 .0039 .0059 .0059 .0079 .0118 .0157	.0020 .0028 .0039 .0039 .0059 – –
.0394- <.0630	– <.79 .79- <1.97 1.97- <4.9 4.9- <9.8 9.8- <15.7 15.7- <23.6 23.6- <31.5	.0079 .0098 .0118 .0138 .0177 .0276 .0354	.0059 .0079 .0098 .0098 .0138 .0197 .0236	.0039 .0059 .0059 .0079 .0098 .0138 .0157	.0028 .0039 .0039 .0059 .0079 – –
.0630- <.0787	– <.79 .79- <1.97 1.97- <4.9 4.9- <9.8 9.8- <15.7 15.7- <23.6 23.6- <31.5	.0098 .0118 .0138 .0157 .0197 .0276 .0354	.0079 .0079 .0118 .0118 .0138 .0197 .0236	.0059 .0059 .0079 .0079 .0098 .0138 .0157	.0039 .0039 .0059 .0059 .0079 – –
.0787- <.0984	– <.79 .79- <1.97 1.97- <4.9 4.9- <9.8 9.8- <15.7 15.7- <23.6 23.6- <31.5	.0138 .0138 .0157 .0177 .0217 .0315 .0394	.0098 .0098 .0118 .0138 .0157 .0236 .0276	.0079 .0079 .0079 .0098 .0118 .0157 .0197	.0059 .0059 .0059 .0079 .0098 – –
.0984- <.1575	– <.79 .79- <1.97 1.97- <4.9 4.9- <9.8 9.8- <15.7 15.7- <23.6 23.6- <31.5	– .0157 .0177 .0197 .0236 .0315 .0394	– .0118 .0118 .0138 .0157 .0246 .0276	– .0079 .0079 .0098 .0118 .0157 .0197	– .0059 .0059 .0079 .0098 – –

Flat Spring Steel Coil Standard Tensile Strength

■ = stock standard
□ = available combination

Thickness	12R11			11R51			9RU10
mm	Tensile strength (MPa)			Tensile strength (MPa)			Tensile strength (MPa)
	1300	1500	1700	1700	1900	2050	1300	1500	1700
0.010	–	□	–	–	–	–	–	–	–
0.015	–	□	□	□	□	□	–	–	□
0.03	□	□	□	□	□	□	□	□	□
0.04	□	□	□	□	□	□	□	□	□
0.05	□	□	□	□	□	□	□	□	□
0.08	□	□	□	□	□	□	□	□	□
0.10	□	■	□	□	□	■	□	□	□
0.15	□	■	■	□	□	■	□	□	□
0.20	□	■	■	□	■	■	□	□	□
0.25	□	■	□	□	■	□	□	□	□
0.30	□	■	□	■	■	■	□	□	□
0.40	■	■	■	□	■	□	□	□	□
0.50	□	■	■	□	■	–	□	□	–
0.60	□	■	□	□	■	–	□	□	–
0.70	□	■	□	□	■	–	□	□	–
0.80	■	□	□	□	■	–	□	■	–
0.90	□	□	■	□	–	–	□	□	–
1.0	□	■	□	□	–	–	□	□	–
1.5	□	■	□	□	–	–	□	□	–
2.0	□	□	–	–	–	–	■	–	–
2.5	□	–	–	–	–	–	□	–	–
3.0	–	–	–	–	–	–	■	–	–

Typical Application Of Stainless Steel Spring Coil

- Vehicle Coil Springs

- Spring Clamps

- Antennas

- S-Tines

- Lock Picks

- Clock Hands

Stainless Steel Checker Plate Available Finish Grade

2B, 2D, HR, CR, BA (No. 8), Satin (Met with PVC Coated), No.1 Finish, No.4 Finish

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