Type 403 stainless plate is a martensitic alloy, very similar to stainless type 410, with the exception of a slightly lower maximum silicon content and a slightly Type 403 stainless plate lower maximum chromium content. Good levels of strength, toughness and ductility may be obtained with this Type 403 stainless plate alloy.
APPLICATIONS
This Type 403 stainless plate alloy may be used for steam turbine buckets, blades, bucket covers, gas turbine compressor blades, nuclear reactor control rod mechanisms, forged valves, fasteners, shafting, pump parts and machine parts
| CHEMICAL ANALYSIS | |
|---|---|
| C | Carbon 0.15 max |
| Mn | Manganese 1.00 max |
| P | Phosphorus 0.040 max |
| S | Sulfur 0.030 max |
| Si | Silicon 0.50 max |
| Cr | Chromium 11.50 – 13.00 |
FORGING
This Type 403 stainless plate alloy may be readily forged, headed or upset. It requires more blows or a heavier hammer than does mild steel. It should be heated uniformly to 2000/2200ºF (1095/1205ºC), depending upon the degree of deformation, then forged and air cooled. Large forgings should be furnace cooled or cooled in dry lime. This grade Type 403 stainless plate should not be forged below 1650ºF (900ºC).
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