Standard: | ASTM A240,ASME SA240 |
Thickness: | 0.3 ~ 60.0mm |
Width Range: | 4'*8ft',4'*10ft',1000*2000mm,1500x3000mm etc |
Brand name: | TISCO, ZPSS, BAOSTEEL, JISCO |
Technique: | Cold Rolled ,Hot rolled |
Forms : | Foils, Shim Sheet, Rolls, Perforated Sheet, Chequered Plate. |
Applications | Pulp and Paper Textiles Water Treatment |
Ex-mill Cold Rolled Finishes | ||||||
Abbreviation | Finishing Process Route | Notes | Typical (Ra) micro-metres | |||
2B | Cold rolled, heat treated, pickled, skin passed | Most common 'cold rolled' finish available. Non-reflective, smooth finish, good flatness control. Thickness range limited by manufactures' skin passing rolling capacity. | 0.1-0.5 | |||
2C | Cold rolled, heat treated, not descaled | Smooth with scale from heat treatment, suitable for parts to be machined or descaled in subsequent production or where the parts are for heat resisting applications. | - | |||
2D | Cold rolled, heat treated, pickled | Thicker sheet size ranges. Smoothness not as good as 2B, but adequate for most purposes. | 0.4-1.0 | |||
2E | Cold rolled, heat treated, mechanically descaled | Rough and dull. Usually applied to steels with a scale which is very resistant to pickling solutions | - | |||
2H | Cold rolled, work hardened | "Temper" rolling on austenitic types improves mechanical strength. Smoothness similar to 2B | - | |||
2R | Cold rolled, bright annealed | Highly reflective "mirror" finish, very smooth. Often supplied with plastic coatings for pressings. Manufactured items usually put into service without further finishing | .05-0.1 | |||
2Q | Cold rolled, hardened and tempered, scale free | Only available on martensitic types (eg 420). Scaling avoided by protective atmosphere heat treatment or descaling after heat treatment |