Scrap steel includes scrap steel, scrap iron, metallurgical waste slag, oxidized waste, alloy scrap steel, stainless scrap steel, etc., which is a general term for ferrous metal waste. The steel scrap (cut heads, trimmings, etc.) that does not become products in the production process of steel mills, as well as the steel materials in the equipment and components that are scrapped after use, are called scrap steel if the composition is steel, and scrap iron if the composition is iron, collectively referred to as scrap steel.

According to the composition classification, according to the national standard GB/T 4223-2017, the carbon content of scrap iron is generally greater than 2.0%. The sulfur content and phosphorus content of Class I scrap iron are not more than 0.07% and 0.40% respectively; the sulfur content and phosphorus content of Class II scrap iron and alloy scrap iron are not more than 0.12% and 1% respectively. The carbon content of scrap steel is generally less than 2.0%, and the sulfur content and phosphorus content are generally not more than 0.05%.

According to the use, scrap steel is mainly divided into two categories: furnace use and non-furnace use. Scrap steel for smelting is divided into 10 types according to its external dimensions and unit weight. Scrap steel for non-smelting is no longer classified and is determined by agreement between the supply and demand parties.

MAIN CLASSIFICATION

Heavy scrap steel

Class 1 201

A≤1000mmX400mm, thickness ≥40mm, unit weight: 40kg～1500kg, cylindrical solid body diameter ≥80mm. Blocks, strips, plates, scrapped steel ingots, billets, initial billets, cut heads, cut tails, steel castings, steel rolls, heavy machinery parts, cutting structures, etc.

Class 2 201

B≤1000mmX500mm, thickness ≥25mm, unit weight: 20kg～1500kg, cylindrical solid body diameter ≥50mm. Blocks, strips, plates, scrapped steel ingots, billets, initial billets, cut heads, cut tails, steel castings, steel rolls, heavy machinery parts, cutting structures, axles, waste industrial equipment, etc. Class 3 201

C≤1500mmX800mm, thickness≥15mm, unit weight: 5kg～1500kg, cylindrical solid body diameter≥30mm. Blocks, strips, plates, scrapped steel ingots, billets, initial rolled billets, cut heads, cut tails, steel castings, steel rolls, train axles, rails, pipes, heavy machinery parts, cutting structures, axles, waste industrial equipment, etc.

MEDIUM-SIZED SCRAP STEEL

Class 1 202

A≤1000mmX500mm, thickness≥10mm, unit weight: 3kg～1000kg, cylindrical solid body diameter≥20mm. Blocks, strips, plates, scrapped steel billets and steel, vehicle and ship plates, scrapped steel parts for machinery, machinery parts, cutting structures, train axles, rails, pipes, waste industrial equipment, etc. Class 2 202

B≤1500mmX700mm, thickness≥6mm, unit weight: 2kg～1200kg, cylindrical solid body diameter≥12mm. Blocks, strips, plates, scrapped steel billets and steel products, vehicle and ship plates, scrapped mechanical steel parts, mechanical parts, cut structural parts, train axles, rails, pipes, scrapped industrial equipment, etc.