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products

High temperature and high pressure double-headed

Applications

One end of the stud can be embedded in the component and the other end is connected to the other part. It is generally used in the case where the connecting piece can not or can not be installed with the head bolt.

Basic parameters

●　Material: Carbon Steel Alloy Steel Stainless Steel ●　Specification：M10-M100(/3/8″-4″) ●　Length：20mm～6000mm ●　Grade： ●　Steel ISO898:5.6～12.9;ASTM A193：B6、B7、B16、B7M;ASTM A320：L7、L7M;SH3404、HG20613、HG20634、GB/T9125. ●　Stainless steel：ISO3506：A2(50～80)、A4(50～80)、ASTM A193/A320：B8(CL1A～CL2B)、B8M(CL1A～CL2B)、B8T(CL1A～ CL2B);ASTM A453;DIN267-T13

Parameters Table

Special fastener material grades, chemical composition, heat treatment system and the mechanical properties of products Material Grade Chemical composition (standard number) Heat treatment system Mechanical properties (not less than) Hardness HB Specification 　σb　 　σs　 　δ　 MPa % 35 GB/T 699 Quenched and tempered（Tempering ≥425℃） - - - - 234～285 45 - - - - 234～285 40Cr GB/T 3077 Quenched and tempered（Tempering≥425℃） M10～M39 835 735 13 269～321 ≥M42 805 685 13 234～285 30CrMoA GB/T 3077 Quenched and tempered（Tempering≥550℃） - - - - 234～285 30CrMoAs GB/T 3077 Quenched and tempered（Tempering≥550℃） < M24 835 735 13 269～321 ≥M24～M76 805 685 13 234～285 >M76 735 590 13 234～285 40CrMOA GB/T 3077 Quenched and tempered（Tempering≥600℃） ≤M64 860 725 16 269～321 >M64 800 655 16 269～321 25Cr2MoVA GB/T 3077 Quenched and tempered（Tempering≥550℃） ≤M48 835 735 15 269～321 >M48 805 685 15 245～277 06Cr19Ni10 GB/T 1220 Solid solution - 520 206 40 ≤187 06Cr17Ni12Mo2 GB/T 1220 Solid solution - 520 206 40 ≤187 35CrMoA for -20 ℃ and below the low temperature, the design should be carried out at low temperature V-shaped notch impact test, the three samples of energy absorption (KV) should not be less than 27J.