630 steel plate High strength bolting and fasteners in aerospace and chemical plant applications. The alloy 630 steel plate has been used in the petrochemical, petroleum, paper and food processing industries and has performed well. The alloy 630 steel plate is also used for boat propeller shafts, where 630 steel plate is supplied as precision straightened, centreless ground shafting. It is also available as investment castings for uses such as boat fittings.
Mechanical Properties
Condition | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) | Elongation (% in 50mm) | Hardness | |
Rockwell C (HR C) | Brinell (HB) | ||||
Solution Treated | 1105 typ | 1000 typ | 15 typ | 38 max | 363 max |
Condition 900 | 1310 min | 1170 min | 10 min | 40 min | 388 min |
Condition 1150 | 930 min | 724 min | 16 min | 28 min | 277 min |
The great benefit of this grade (and of other precipitation hardening grades of stainless steel) is that they are generally supplied in the solution treated condition, in which they are just machinable, and then can be age hardened to achieve quite high strengths.
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