Reference tables for bolt and screw breaking torque (failure torque): austenitic stainless steel Grade 50/70/80 (M1.6–M16, per GB/T 3098.6-2000) and carbon steel Grade 8.8/9.8/10.9/12.9 (M1–M10, per GB/T 3098.13), with fine-pitch...
Read MoreStainless steel fasteners (304, 316) being magnetic is a normal result of cold working during manufacturing — not a sign of counterfeit or substandard material. This article explains the austenite-to-martensite...
Read MoreSUS303 is the correct stainless steel for CNC turned parts, not SUS304. This article compares their actual chemical compositions as used in turning bar stock, explains why SUS303's high sulfur...
Read More40Cr is a medium-carbon chromium alloy structural steel (GB/T 3077) offering tensile strength ≥ 800–1000 MPa after quenching and tempering, with significantly better hardenability than plain 45 steel. This guide...
Read MoreH56 brass is a 55–57% copper alloy offering balanced strength, moderate ductility, and good machinability at a competitive cost. This guide covers its chemical composition, mechanical and physical properties, comparison...
Read MoreH62 brass is a common 62% copper alloy (GB/T 5231) offering good strength, excellent cold formability, and good corrosion resistance in air and water. This guide covers its chemical composition,...
Read MorePA66 (Polyamide 66 / Nylon 66) is a high-performance thermoplastic engineering plastic produced from adipic acid and hexamethylenediamine, offering high strength, excellent wear resistance, and a melting point of ~260°C....
Read MoreD2-80 is a duplex stainless steel fastener grade per GB/T 3098.6-2023, offering tensile strength ≥ 800 N/mm², yield strength ≥ 600 N/mm², corrosion resistance 2× better than SUS304, and excellent...
Read MoreA comprehensive selection guide for automatic lathe and CNC Swiss-type machining bar stock materials, covering free-machining stainless steel (SUS303F, SUS316F, SUS416F, SUS420F, SUS430F), carbon steel (C12L14, S45CF), brass (C3604), and...
Read More1008 low-carbon steel (C ≤ 0.10%) is the standard cold heading wire rod for Grade 4 and 4.8 fasteners, offering excellent cold formability, good weldability, and case-hardenability. This guide covers...
Read More