Sandvik 5CR12 (Plate and sheet)

Chemical composition (nominal) %

Corrosion resistance

General corrosion

Sandvik 5CR12 displays high resistance to corrosion related thickness loss in rural atmospheres and extensive resistance in industrial atmospheres

It is fully resistant in condensed moisture and is also resistant in neutral low-salt water at moderate temperatures. When coated the material displays considerably less rusting and creepage under high corrosive loads than conventional structural steels.

Mechanical properties

At 20°C (68°F)

The hardness (Vickers) is approximately 150/170
The impact strength (Charpy V) at 20 °C is min. 100 J/mm2.

At high temperatures

Physical properties

Density: 7.7 g/cm³

Heat treatment

Plates are normally delivered in heat treated condition. If additional heat treatment is needed after further processing the following is recommended.

Stress relieving

850-950°C (1560-1740°F), cooling in air.

Solution annealing

1000-1100°C (1830-2010°F), rapid cooling in air or water.

Welding

Sandvik 5CR12 can be welded by all known methods. An austenitic filler is recommended.

A microstructure consisting of martensite and small amounts of ferrite forms in a narrow band directly adjacent to the weld in the heat affected zone.

Further towards the base metal a virtually fully martenisitic fine-grain microstructure is formed.

Hardness in the heat affected zone rises between 300 and 340 HV1 in all welding methods without any characteristic differences. Welding exerts no recognisable influence on yield point or tensile strength in comparison with unwelded steel.

As filler material for gas-shielded arc welding we recommend wire electrodes and rods Sandvik 309LSi.

In manual metal-arc welding covered electrodes Sandvik 309LR are recommended.

In sub arc welding Sandvik we recommend wire electrodes Sandvik 309L.

Flux cored arc welding is not recommended.

Bending

Sandvik 5CR12 can be fabricated without difficulty by numerous forming operations such as bending, press braking, profiling, deep drawing and stretch forming.

The recommended minimum bend radius is 1 s with the bend axis transverse to rolling direction. When bending parallel to rolling direction, the bend radius should be no lower than 1.5s

Forms of supply

Plate and sheet are delivered in the solution annealed and pickled condition. Normal finishes available are No1 and 2B.

Sandvik 5CR12 plate, sheet and coil is stocked in a wide range of sizes according to ASTM. Details of our Australia stock program are given below:

Plate (No1 Finish)
Thickness range: 3–25 mm
Widths: 1220 mm, 1500 mm, 2000 mm

Sheet (2B/No1 Finish)
Thickness range: 1.5–3mm
Widths: 1219 mm, 1250 mm, 1500 mm, 2000 mm
Lengths: 2438 mm, 2500 mm, 3000 mm, 3048 mm, 6000 mm

Coil (2B/No1 Finish)
Thickness range: 1.5–8mm
Widths: 1200/1219 mm, 1500/1524 mm, 2000 mm

Applications

Sandvik 5CR12 is used for a wide range of industrial, transportation, mineral processing and agricultural applications.

Typical examples are: mine cars, coal wagons, rail wagons, structural members, truck bodies, scaffolding, gravel and material handling conveyors and equipment, stable and feeding equipment etc. in the industrial, transportation, mineral processing and agricultural industries.