Stainless Steel 304 Scrap

Product Description

Material Overview

Stainless Steel 304 (UNS S30400 / EN 1.4301 / JIS SUS304 / 18-8) is the most widely used austenitic chromium-nickel stainless steel globally. Containing nominally 18% chromium and 8% nickel, it exhibits excellent atmospheric corrosion resistance, high formability, and good weldability. Type 304 scrap serves as a primary raw material charge for stainless steel mills and foundries.

304 Chemical Composition Specification

Mechanical & Physical Properties

304 Scrap Classifications & Characteristics

• Types of Scrap: Sheet skeletons, plate cut-offs, pipe/tube crops, stamping punchings, wire offcuts, forging ends, CNC turnings, and solid foundry melt stock.

• Scrap Grades & Forms:

  • Solids (18-8 Stainless Scrap): Heavy clean plate, sheet cuttings, and structural pieces free of non-ferrous metals, attachments, dirt, or excessive rust.

  • Turnings & Borings: Machining chips and lathe swarf (must be degreased and free of high-sulfur oils or carbon steel mixing).

  • Baled / Bundled Scrap: Hydraulically compressed sheet punchings or skeleton scrap prepared for rapid furnace charging.

• Sorting & Identification:

  • Non-Magnetic Response: Non-magnetic in annealed condition, distinguishing it from ferritic (430) or martensitic (410, 17-4PH) grades.

  • PMI / XRF Testing: Verification of 8% to 10.5% Nickel and 18% Chromium is standard to separate 304 from 316 (which contains 2% Mo) or 200-series low-nickel stainless grades.

Key Industry Standards & Specifications

• ASTM Standard: ASTM A240 / A240M (Plate, Sheet, and Strip), ASTM A276, ASTM A312, ASTM A479

• ASME Standard: ASME SA240 / SA312

• UNS Designation: UNS S30400 (304) / UNS S30403 (304L)

• EN / W.Nr Standard: 1.4301 / X5CrNi18-10

• JIS Standard: SUS 304

• ISRI Scrap Code: "Sabot" (Stainless Steel Scrap 18-8)

• HS Code: 7204.49 (Stainless Steel Scrap) / 7219.34 (Flat-rolled Stainless Steel)