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4955 Quality Sheet Specification
Medium and high strength low alloyed steels suitable for cold forming for manufacture of chassis, cranes, trailers and railings in particular
AlternativesThere is no alternative to this sheet.
Flat / Hot Rolled
Flat steel products are obtained by heating semi-finished products with a rectangular cross-section (slab), which are produced by the continuous casting method, to a specific temperature and then rolling them, with thicknesses ranging from 1.40 to 25.40 mm and widths ranging from 700 to 2025 mm, produceed as coil or by cutting/slit-coiling flat steel products from coils.
Medium and high strength low alloyed steels suitable for cold forming for manufacture of chassis, cranes, trailers and railings in particular
Chemical Composition (%)
| Standard Equivalent | Erdemir Grade No | Cmax. | Mnmax. | Pmax. | Smax. | Simax. | Almin. | Vmax. | Nbmax. | Timax. | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Standard | Quality | ||||||||||
| EN 10149-2:2013 | S550MC | 4955 | 0.12 | 1.80 | 0.025 | 0.015 | 0.50 | 0.015 | 0.20 | 0.09 | 0.15 |
- (Nb + V + Ti) ≤ 0.22%
- The products are supplied in "thermomechanically rolled" condition
Mechanical Properties
| Standard Equivalent | Erdemir Grade No | Re [N/mm2] | Rm [N/mm2] | A(%) min. t(thickness, mm) | Impact | Bend (Transverse , BMD) t: thickness | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Standard | Quality | ||||||||||||
| A801.8≤t≤2.99 | A53≤t≤20 | Temperature ( ° C)6≤t≤7.49 | KVC J min.6≤t≤7.49 | Temperature ( ° C)7.5≤t≤9.99 | KVC J min.7.5≤t≤9.99 | Temperature ( ° C)10≤t≤20 | KVC J min.10≤t≤20 | 180° | |||||
| EN 10149-2:2013 | S550MC | 4955 | 550 min. | 600-760 | 12 | 14 | -20 | 20 | -20 | 30 | -20 | 40 | Ø 1,5d |
- Tensile test values apply to "longitudinal" test pieces
- The impact test is carried out only when specified at the time of enquiry and order and is not carried out for thickness thinner than 6 mm.