Classification of symbols | Numerical classification | European Standard (EN) | Chemical Composition | |||||||
C | Si | Mn | Max. P | Max. S | Cr | V | Ni | |||
C60S | 1.1211 | EN 10132-4 | 0.57 - 0.65 | 0.15 - 0.35 | 0.60 - 0.90 | 0.025 | 0.025 | max. 0.40 | - | max. 0.40 |
C67S | 1.1231 | EN 10132-4 | 0.65-0.73 | 0.15 - 0.35 | 0.60 - 0.90 | 0.025 | 0.025 | max. 0.40 | - | max. 0.40 |
C75S | 1.1248 | EN 10132-4 | 0.70-0.80 | 0.15 - 0.35 | 0.60 - 0.90 | 0.025 | 0.025 | max. 0.40 | - | max. 0.40 |
51CrV4 | 1.8159 | EN 10132-4 | 0.47 - 0.55 | max. 0.40 | 0.70 - 1.10 | 0.025 | 0.025 | 0.90 - 1.20 | 0.10 - 0.25 | max. 0.40 |
Classification of symbols | Numerical classification | European Standard (EN) | Approximate international equivalents | |||||
US (AISI) | Japan (JIS) | China (GB) | ||||||
C60S | 1.1211 | EN 10132-4:2000 | ||||||
C67S | 1.1231 | EN 10132-4:2000 | 1065 | A682/684 | S65C-CSP | G4802 | 70 | GB/T 1222 |
C75S | 1.1248 | EN 10132-4:2000 | 1074 | A682/684 | - | - | - | - |
51CrV4 | 1.8159 | EN 10132-4:2000 | 6150 | A505/506 | SUP 10 | G4802 | 50CrVA | GB/T 1222 |
Classification of symbols | Numerical classification | European Standard (EN) | Mechanical properties and hardness requirements | Rockwell hardness values of steel for springs | |
Tempered and quenched (+QT) d | Tempered and quenched (+QT) | ||||
Rm N/mm² | HV | HRC | |||
C60S | 1.1211 | EN 10132:2021 | 1150 - 1750 | 345 - 530 | 35 - 51.5 |
C67S | 1.1231 | EN 10132:2021 | 1200 - 1900 | 370 - 580 | 38.5 - 54 |
C75S | 1.1248 | EN 10132:2021 | 1200 - 1900 | 370 - 580 | 38.5 - 54 |
51CrV4 | 1.8159 | EN 10132:2021 | 1200 - 1800 | 370 - 550 | 38.5 - 52.5 |
Note: it is possible to specify the hardness values or the tensile strength values, but not both. If neither of the two values is specified, the tensile strength value is calculated.
The specification for tensile strength/hardness must fall within a range of 150 N/mm² or 50 HV, unless expressly stated otherwise in the commercial agreement.
EN 10132-4:2000
Finish | Description |
Rust grey/blue | Unpolished |
Bright tempered | Unpolished |
Polished | Obtained through fine grinding, abrasive brushing or other procedures. |
Polished and coloured | Blue or yellow in colour due to oxidation caused by heat treatment. |
THICKNESS TOLERANCES
Nominal Thickness t | Thickness tolerances according to EN 10140 for nominal widths w of | ||||||
<125 | ≥ 125 and <600 | ||||||
> | ≤ | A normal | B fine | C precision | A normal | B fine | C precision |
- | 0.10 | ± 0.008 | ± 0.006 | ± 0.004 | ± 0.010 | ± 0.008 | ± 0.005 |
0.10 | 0.15 | ±0.010 | ± 0.008 | ± 0.005 | ± 0.015 | ± 0.012 | ± 0.010 |
0.15 | 0.25 | ±0.015 | ± 0.012 | ± 0.008 | ± 0.020 | ± 0.015 | ± 0.010 |
0.25 | 0.40 | ± 0.020 | ± 0.015 | ± 0.010 | ± 0.025 | ± 0.020 | ± 0.012 |
0.40 | 0.60 | ± 0.025 | ± 0.020 | ± 0.012 | ± 0.030 | ± 0.025 | ± 0.015 |
0.60 | 1.00 | ± 0.030 | ± 0.025 | ± 0.015 | ± 0.035 | ± 0.030 | ± 0.020 |
1.00 | 1.50 | ± 0.035 | ± 0.030 | ± 0.020 | ± 0.040 | ± 0.035 | ± 0.025 |
1.50 | 2.50 | ± 0.045 | ± 0.035 | ± 0.025 | ± 0.050 | ± 0.040 | ± 0.030 |
2.50 | 4.00 | ± 0.050 | ± 0.040 | ± 0.030 | ± 0.060 | ± 0.050 | ± 0.035 |
4.00 | 6.00 | ± 0.060 | ± 0.050 | ± 0.035 | ± 0.070 | ± 0.055 | ± 0.040 |
Sizes in mm.
WIDTH TOLERANCES
Width tolerances for strips with sheared edges | Standard slitting tolerances for VINCO 1) | Width tolerances according to the EN 10140 Standard for nominal widths of: | |||||||||
Nominal Thickness t | 3-15 | 15-50 | 50-150 | >150 | <125 | ≥ 125 and <250 | ≥250 and <600 | ||||
>= | < | A | B | A | B | A | B | ||||
0.1 | 0.4 | ± 0.075 2) | ± 0.075 2) | ± 0.075 2) | ± 0,10 2) | ± 0.15 | ± 0.10 | ± 0.20 | ± 0.13 | ± 0.25 | ± 0.18 |
0.4 | 0.7 | ± 0,085 | ± 0,09 | ± 0,10 | ± 0,12 | ± 0.15 | ± 0.10 | ± 0.20 | ± 0.13 | ± 0.25 | ± 0.18 |
0.7 | 1.0 | ± 0.085 3) | ± 0.09 3) | ± 0.10 3) | ± 0.12 3) | ± 0.20 | ± 0.13 | ± 0.25 | ± 0.18 | ± 0.30 | ± 0.20 |
1.0 | 1.5 | ± 0.10 4) | ± 0.10 4) | ± 0.10 4) | ± 0.15 4) | ± 0.20 | ± 0.13 | ± 0.25 | ± 0.18 | ± 0.30 | ± 0.20 |
1.5 | 2.5 | on request | ± 0.13 5) | ± 0.15 5) | ± 0.16 5) | ± 0.25 | ± 0.18 | ± 0.30 | ± 0.20 | ± 0.35 | ± 0.20 |
2.5 | 2.6 | on request | on request | ± 0.16 | ± 0.175 | ± 0.25 | ± 0.18 | ± 0.30 | ± 0.20 | ± 0.35 | ± 0.25 |
2.6 | 4.1 | on request | on request | ± 0.16 | ± 0.175 | ± 0.30 | ± 0.20 | ± 0.35 | ± 0.25 | ± 0.40 | ± 0.30 |
4.1 | 6.1 | on request | on request | ± 0.16 | ± 0.175 | ± 0.35 | ± 0.25 | ± 0.40 | ± 0.30 | ± 0.45 | ± 0.35 |
1) Other, closer dimensional tolerances are possible under a commercial agreement
2) Including the value t= 0.4
3) Including the value t= 1
4) Including the value t= 1.5
5) Including the value t= 2.5
LENGTH TOLERANCES
Length tolerances | Closer tolerances are possible under a commercial agreement | Positive tolerance in relation to the nominal length, according to the EN 10140 Standard for the | |
Nominal length L | Class A | Class B | |
L ≤ 1000 | + 2 | + 10 | + 6 |
1000 < L ≤ 2500 | +0,002L | + 0.01 L | + 6 |
L > 2500 | +0,002L | + 0.01 L | + 0.003 L |
Sizes in mm.
EDGE CAMBER TOLERANCES
Nominal width (w) | Closer edge curve tolerances possible under a commercial agreement | Edge curve tolerances according to the EN 10140 Standard | ||
Maximum deviation 1000 mm | ||||
Thickness t | Class A (Normal) (maximum deviation) | Class B (FS) (Reduced) (maximum deviation) | ||
t ≤ 1.20 mm | t > 1.20 mm | |||
3 ≤ W < 6 | 2.50 | 4.00 | - | - |
6 < W ≤ 10 | 2.00 | 3.00 | - | - |
10 < W ≤ 20 | 1.00 | 1.50 | 5.00 | 2.00 |
20 < W < 25 | 1.00 | 1.50 | 5.00 | 2.00 |
25 ≤ W < 40 | 1.00 | 1.50 | 3.50 | 1.50 |
40 ≤ W < 125 | 1.00 | 1.50 | 2.50 | 1.25 |
125 ≤ W ≤ 350 | 1.00 | 1.50 | 2.00 | 1.00 |
350 < W < 600 | - | - | 2.00 | 1.00 |
Sizes in mm.
The absolute value of the tolerance can be divided within that range.
RIPPLE - LONGITUDINAL FLATNESS