C65, C67 & C75 GRADE ARE KNOWN AS SPRING STEEL STRIP ANNEALED, SPRING STEEL STRIP UNHARDENED, HIGH CARBON STEEL STRIP OR COLD ROLLED STEEL STRIP.
It offers a good fatigue value and elastic limit after hardening and tempering. Due to its low consumption,
It is not available in stock but we supply against specific orders.
Minimum order quantity and lead time depends on the required size.
| Properties of C65 grade cold rolled annealed steel strips Chemical composition by weight | |
|---|---|
| CARBON | 0.62 - 0.70% |
| SILICON | 0.15 - 0.35% |
| MANGANESE | 0.60 - 0.90% |
| SULPHUR | 0.025% MAX |
| PHOSPHOROUS | 0.025% MAX |
| Properties of C67 grade cold rolled annealed steel strips Chemical composition by weight | |
|---|---|
| CARBON | 0.62 - 0.72% |
| SILICON | 0.15 - 0.35% |
| MANGANESE | 0.60 - 0.90% |
| SULPHUR | 0.025% MAX |
| PHOSPHOROUS | 0.025% MAX |
| Properties of C75 grade cold rolled annealed steel strips Chemical composition by weight | |
|---|---|
| CARBON | 0.62 - 0.70% |
| SILICON | 0.15 - 0.35% |
| MANGANESE | 0.60 - 0.90% |
| SULPHUR | 0.025% MAX |
| PHOSPHOROUS | 0.025% MAX |
| Physical Properties of C65, C67 & C75 grade cold rolled annealed steel strips | |
|---|---|
| HARDNESS IN ANNEALED CONDITION | 200Hv Max |
| YIELD STRENGTH | 290 N/NM2 |
| ELONGATION | 25% Min |
| TENSILE STRENGTH | 640N/mm2 |
| Bend test When bending maintain radius | ||
|---|---|---|
| THICKNESS | GRAIN WISE | AGAINST GRAINS |
| For thickness 4.00 mm to 2.50 mm | r=2t | not advised |
| For thickness 2.30 mm to 1.20 mm | r=1t | not advised |
| For thickness 1.0 mm to 0.50 mm | r=0t | r=1t |
| For thickness 0.45 mm to 0.20 mm | r=0t | r=0r |
| . |
|---|
| Usually in coils, thicker strips can also be supplied in cut to length and levelled strips |
| Edges are slitted |
| Coil ID 300-500mm as per mutual agreement with buyer |
| Coil weight as per mutual understanding with buyer |
| Surface finish is bright suitable for electroplating |
| . | . |
|---|---|
| HIGH PERFORMANCE SPRINGS | MACHINE KNIFE BLADES |
| FLAT SPRINGS | AUTOMOTIVE SPRINGS |
| CIRCLIPS | CLUTCH PLATES |
| KNIVES | BLADES |
| WOOD SAWS | SHIMS |
| HAND TOOLS | AGRICULTURAL TOOLS |
