s41500 stainless steel equivalent material

S41500 Stainless Steel Equivalent Material: Comprehensive Guide

Published: November 7, 2025 | Updated: November 7, 2025By Gangsteel Engineering Team – 25+ Years in Stainless Steel Export Excellence

S41500 stainless steel, designated as UNS S41500 in the Unified Numbering System, is a martensitic grade prized for its high strength, good toughness, and moderate corrosion resistance, making it a staple in demanding applications like pressure vessels, valves, and offshore components. Often referred to as F6NM or AISI 415, this material's low-carbon composition ensures excellent weldability and heat-treat response, with a density of 7.85 g/cm³ supporting efficient designs.

As a leading producer and exporter in China, Gangsteel has supplied thousands of tons of S41500 material, helping clients find suitable equivalents for global compliance and cost optimization. If you're cross-referencing equivalents for a petrochemical project or sourcing alternatives for ASME SA240 specs, understanding S41500's matches—like EN 1.4313 (X3CrNiMo13-4)—is crucial for seamless substitution. This guide explores the primary equivalents, property comparisons, and practical considerations, based on industry standards and our mill experience.

From our 2024 exports to European refineries, clients swapped S41500 for 1.4313 equivalents without retesting, saving 15% on certification while maintaining performance in sour environments. S41500 isn't unique—its chemistry and properties align closely with several global grades, allowing flexibility in sourcing. However, always verify with mill certs, as minor differences in Mo or Ni can affect corrosion in specific uses. Let's break down the equivalents, starting with the most common, and explore how they stack up.

Primary Equivalents for S41500 Stainless Steel

S41500's equivalents are based on similar martensitic structures, with overlapping chemistry (low C, ~12-14% Cr, 4-5% Ni, 0.5-1% Mo) and mechanicals (yield ~620 MPa, hardness <32 HRB). The closest is EN 1.4313 (X3CrNiMo13-4), often considered a direct match for European specs. Other regional variants provide similar performance.

Equivalents Table

Gangsteel's stock includes dual-certified S41500/1.4313 plates (1-200mm thick), priced at $2,600-2,800/ton FOB, for seamless global use.

Property Comparison: S41500 vs. 1.4313

Both share similar density (7.85 g/cm³) and PREN (18-22), with mechanicals aligned in tempered state:

Corrosion: Both NACE MR0175 for H2S; 1.4313 slightly lower Mo but equivalent PREN.

Applications: Where Equivalents Shine

S41500 and equivalents like 1.4313 are used in:

• Oil & Gas: Sour service valves (NACE compliance).
• Petrochemical: Reactors (weldability).
• Marine: Risers (pitting resistance).
• Power: Turbine parts (strength).

Gangsteel's dual-cert material has enabled seamless swaps in UK projects, maintaining performance.

Sourcing Equivalents: Tips for 2025

• Price: $2,600-2,800/ton FOB for S41500/1.4313 stock.
• Stock: 1-200mm plates; custom equivalents.
• Tip: Dual-cert saves on testing; verify Mo for corrosion-critical uses.

Contact Gangsteel for quotes on S41500 equivalents.

FAQ: S41500 Equivalent Material Questions Answered

Q: What is the main equivalent material for S41500 stainless steel?A: The primary equivalent is EN 1.4313 (X3CrNiMo13-4), with nearly identical chemistry (C 0.05 max, Cr 12-14%, Ni 3.5-4.5%, Mo 0.3-0.7%) and properties for direct substitution in plates and forgings. It's the European match for UNS S41500 in standards like EN 10088-3.

Q: Is S41500 equivalent to AISI 415?A: Yes, AISI 415 is the legacy U.S. name for UNS S41500, with identical composition and properties for full equivalence.

Q: What are other global equivalents for S41500?A: Equivalents include AFNOR Z6CND13-04 (France), JIS SUSF415 (Japan), BS 416S21 (UK), and SS 2385 (Sweden)—all sharing martensitic structure and corrosion resistance for similar uses.

Q: How do properties of S41500 compare to its equivalents?A: Properties are highly similar: tensile 795 MPa min, yield 620 MPa min, elongation 15% min, hardness 32 HRB max. Equivalents like 1.4313 have slight Mo differences but equivalent PREN (18-22) and impact toughness.

Q: Can I use equivalents like 1.4313 in place of S41500?A: Yes, with high interchangeability for chemistry and mechanics; dual-cert material from Gangsteel ensures compliance without retesting.

Q: What standards govern S41500 and its equivalents?A: S41500 under ASTM A240/A182; equivalents like 1.4313 under EN 10088-3/EN 10222-5. Gangsteel provides dual-cert for ASME/EN harmony.

Q: Where can I source S41500 or its equivalents?A: Gangsteel stocks S41500 and equivalents like 1.4313 at $2,600-2,800/ton FOB, 1-200mm thick. Contact for quotes.

Q: Is X4CrNi13-4 an equivalent to S41500?A: No, X4CrNi13-4 lacks Mo and is closer to 1.4006 (410 equivalent); S41500's true match is X3CrNiMo13-4 (1.4313) with Mo for better corrosion.