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″
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:
- AISI 1050 has the lowest carbon content, making it easily formable. It also can be heat treated in order to increase hardness.
- AISI 1074 and 1075 have a medium carbon content that’s been spheroidized to increase its formability, and can be heat treated.
- 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