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    625

    API 6A CRA

     

    GENERAL SCOPE:

    625 is a Nickel based steel commonly used in a wide variety of oilfield applications that are suitable for high temperatures and severe corrosive environments.

    625 PLUS is very similar to alloy 625, but this variation can be strengthened through precipitation hardening. 625 PLUS is used in deep sour wells where higher strengths and severe corrosion resistance is required. 


    Chemical Composition:

    625

    C Mn P S Si Cr Ni Mo Nb/Ta Ti Al Fe
    Minimum           20.000 58.000 8.000 3.150      
    Maximum 0.100 0.500 0.020 0.015 0.500 23.000   10.000 4.150 0.400 0.400 5.000

    625 PLUS

    C Mn P S Si Cr Ni Mo Ti Al Fe
    Minimum           19.000 59.000 7.000 1.000    
    Maximum 0.030 0.200 0.015 0.010 0.200 22.000 63.000 9.500 1.600 0.350 10.440

    COMMONLY STOCKED STRENGTH LEVELS:

    625: 60,000 psi yield minimum -  limited to a Rockwell C -35 maximum for compliance NACE MR-01-75/ISO 15156 (for use in hydrogen sulfide environments)

    625 PLUS: 120,000 psi yield minimum -  limited to a Rockwell C -43 maximum for compliance NACE MR-01-75/ISO 15156 (for use in hydrogen sulfide environments)


    COMMONLY STOCKED MATERIAL FORMS:

    Rolled bar
    Tubing
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