Super 13CR
SUPER 13 CHROME(13-5-2): ASTM A-276, & ASTM A-484
GENERAL SCOPE:
There are several proprietary Super 13 Chrome grades available in the market today. The most common are UNS S41425, S41426, & S41427. These grades are used in oilfield environments that contain CO2, and low concentrations of H2S.
CHEMICAL COMPOSITION:
UNS-41425 | C | Mn | P | S | Si | Cr | Ni | Mo |
---|---|---|---|---|---|---|---|---|
Minimum | 0.500 | 12.500 | 4.500 | 1.600 | ||||
Maximum | 0.030 | 1.000 | 0.020 | 0.005 | 0.500 | 14.000 | 6.000 | 2.000 |
UNS-41426 | C | Mn | P | S | Si | Cr | Ni | Mo |
---|---|---|---|---|---|---|---|---|
Minimum | 11.500 | 4.500 | 1.500 | |||||
Maximum | 0.030 | 0.500 | 0.020 | 0.005 | 0.500 | 13.500 | 6.000 | 2.500 |
UNS-41427 | C | Mn | P | S | Si | Cr | Ni | Mo |
---|---|---|---|---|---|---|---|---|
Minimum | 11.800 | 4.500 | 1.600 | |||||
Maximum | 0.030 | 1.000 | 0.020 | 0.005 | 0.500 | 13.500 | 6.000 | 2.500 |
COMMONLY STOCKED STRENGTH LEVELS:
95,000 psi minimum yield- limited to a Rockwell C - 28/29 maximum
110,000 psi minimum yield - limited to a Rockwell C -32 maximum
COMMONLY STOCKED MATERIAL FORMS:
Rolled bar
Forged bar
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