EN9/C55
COLD ROLLED ANNEALED C55
THIS IS A MEDIUM CARBON COLD ROLLED STEEL STREP WITH A VERY HIGH YIELD STRENGTH. THIS ALLOWS OBJECTS MADE OF THIS STEEL TO RETURN TO THEIR ORIGINAL SHAPE DESPITE SIGNIFICANT BENDING OR TWISTING AFTER HARDENING AND TEMPERING.
Usually in soft annealed condition but can also be supplied in temper rolled hardness in range between 200-300Hv ( band range is +/-40 Hv )
This grade of steel strip is used where fatigue values and elastic limits are not critical, is used for applications in which high strength, hardness and wear resistance are important. This grade of steel strips has good forming, blanking and bending properties.
PROPERTIES
FORM OF SUPPLY
APPLICATION
PROPERTIES
| Properties of C55 grade cold rolled annealed steel strips Chemical composition by weight | |
|---|---|
| CARBON | 0.50 - 60% |
| MANGANESE | 0.60 - 0.90% |
| SILICON | 0.0 - 0.35% |
| SULPHUR | 0.025% |
| PHOSPHOROUS | 0.025% |
| Physical Properties of C55 grade cold rolled annealed steel strips | |
|---|---|
| HARDNESS IN ANNEALED CONDITION | 200Hv Max |
| YIELD STRENGTH | 270 N/MM2 |
| ELONGATION | 30% Min |
| TENSILE STRENGTH | 590 N/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 |
⚡ Steel Weight Calculator
Precision Weight Calculator for Steel Sections
⚙️ Density: 7.85 g/cm³ (7850 kg/m³)
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