Our product range contains a wide range of alloy steel, Martensitic Stainless Steel, ferritic stainless steel, low carbon steel and medium carbon steel
Low Carbon Steel
Generally they contain less than 0.25% carbon. SAE Grade 2 (Metric class 4.6, 4.8 & 5.8) fasteners are made with AISI grades 1006, 1010, 1016, 1018, 1022 & 1035 being low carbon steels.
They have a carbon content between 0.25% to 0.60%. SAE Grade 5 (Metric class 8.8) fasteners are made out of medium carbon steels with AISI grades 1038, 1541, 5132 & 5135 and also ASTM A194 Grade 2, 2H, & 2HM, ASTM A325, ASTM A449.
These are carbon steels that have additives eg. boron, manganese, chromium, silicon etc. SAE Grade 8 (Metric class 10.9, 12.9) fasteners are generally manufactured out of alloy steel with AISI grades 4137, 4140 (B7), 4340 & 5140 and also ASTM A307 - Grade ABC, ASTM A194 Grade 4, 7, & 7M, ASTM A193 B7 & B7M, ASTM A320 Grade L7, L43 falling into this category.
They contain between 15 % to 18 % chromium and is a non heat-treatable, magnetic and has very poor weld characteristics. It should not be used in situations where the likelihood of corrosion is high and includes grades 430 (F1) & 430F.
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