F6NM Scrap/ Stainless Steel F6NM Scrap / F6NM Foundry Scrap

Product Description

Material Overview

F6NM (UNS S41500 / EN 1.4313 / X3CrNiMo13-4) is a low-carbon 13% chromium, 4% nickel, 0.5% molybdenum martensitic stainless steel. Developed for improved weldability, toughness, and cavitation erosion resistance compared to standard 12% Cr martensitic steels (such as 410 or 420), F6NM is widely used in hydro-turbines, valve bodies, pumps, compressors, and offshore oil and gas equipment.

F6NM Chemical Composition Specification

Mechanical & Physical Properties

F6NM Scrap & Foundry Grade Characteristics

• Types of Scrap: Forging crops, heavy plate cut-offs, valve body gates and risers, pump casing runners, bar end cuts, machine turnings, and solid foundry melt stock.

• Scrap Grades:

  • Heavy Solid Foundry Scrap: Clean, heavy-gauge forged or cast cut-offs, ideal for induction furnace re-melting.

  • Loose Scrap / Crop Ends: Cut pieces from forging operations, test coupons, and structural cut-offs.

  • Turnings / Borings: Machining chips (must be degreased and free of high-sulfur cutting fluids or foreign alloys).

• Sorting & Quality Verification:

  • Magnetic Property: F6NM is strongly magnetic, distinguishing it from 300-series austenitic stainless steels.

  • PMI/XRF Verification: Essential to verify the presence of 3.5% to 5.5% Nickel and 0.5% to 1.0% Molybdenum to prevent mixing with standard 410 (0% Ni/Mo) or 420 grades.

  • Contamination Limits: High-purity scrap must be free of cross-contamination from high-carbon, high-sulfur, or non-ferrous elements.

Key Industry Standards & Specifications

• ASTM Standard: ASTM A182 (Grade F6NM), ASTM A240, ASTM A352 (Grade CA6NM), ASTM A479, ASTM A743 (Grade CA6NM)

• ASME Standard: ASME SA182 / SA352

• UNS Designation: UNS S41500 (Forged) / UNS J91540 (Cast - CA6NM)

• EN / W.Nr Standard: 1.4313 / X3CrNiMo13-4

• HS Code: 7204.49 (Stainless Steel Scrap) / 7222.11 (Stainless Steel Bars/Forgings)