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    The materials used in the fastener

    Fasteners used materials have the following five:
    ? alloy steel
    Carbon steel (carbon steel, low carbon steel and medium)
    ? stainless steel
    ? copper and copper alloy
    ? aluminum and aluminum alloy
    1, He Jingang
    Steel containing alloy element called alloyed steel, according to the amount of alloy elements is divided into: from the content of alloy elements of:
    Low alloy steel: less than 5% in total
    In alloy steels: total amount is 5%-10%
    High alloy steels: total amount higher than 10%
    The main elements contained in the alloy can be divided into: chromium chromium nickel steel
    Manganese silicon manganese steel. The relevant number: 30Cr 35Cr 40Cr
    20CrMn 30CrMo 35CrMoA 20CrMoA 21CrMoA
    20CrMovTiB 20CrMoVNbTiB 20CrMoV
    21Cr12wMoVNbB Gh2132 35CrMo 42CrMo
    2, carbon steel
    ? low carbon: carbon content of less than or equal to 0.25%, related to the use of steel with Q215 Q235 Q195 10# 15# 20#
    ? medium carbon steel: carbon content of greater than 0.25% and less than or equal to 0.6%, related to the use of steel with 35# 45#
    ? high carbon: carbon content more than 0.6%, at present, our use of standard parts at the end of high carbon steel.
    3, stainless steel
    Stainless steel contains alloying elements Cr Ni Ti has antiseptic properties of materials. It consists of austenitic stainless steel, such as A2 (304 series stainless steel) A4 (316 series stainless steel), 301 and 302 series stainless steel Austenitic - ferritic stainless steel such as: 0Cr26Ni5Mo2 1Cr18Ni11Si4AlTi. ferrite stainless steel, such as: 00Cr12 1Cr17 0Cr3Al. martensitic stainless steel such as: 2Cr13, 3Cr13 4Cr13
    4, copper and copper alloy
    Copper and copper alloy used in the fastener:
    T2 H63 HPb59-1
    QSn6.5-0.4 QSi1-3
    5, aluminum and aluminum alloy
    There are aluminum and aluminum alloy used in fastener:
    5A02 2B11
    2A90 7A09
    5A12 5A05