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4950 Quality Sheet Specification
Medium and high strength low alloyed steels suitable for cold forming for manufacture of chassis, cranes, trailers and railings in particular
Reproducible Letter Symbols --> HRUKK --> KRKK --> LRKK --> RKK
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 | S500MC | 4950 | 0.12 | 1.70 | 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≤22 | 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≤22 | KVC J min.10≤t≤22 | 180° | |||||
| EN 10149-2:2013 | S500MC | 4950 | 500 min. | 550-700 | 12 | 14 | -20 | 20 | -20 | 30 | -20 | 40 | Ø 1d |
- 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.