EN ISO 5832-1:2024 PDF

Overview

EN ISO 5832-1:2024 (Corrected version 2025-06) specifies the chemical, microstructural and mechanical characteristics - and the corresponding test methods - for wrought stainless steel intended for the manufacture of surgical implants. The alloy corresponds to UNS S31673 in ASTM F138 / F139. The standard covers raw material requirements (not finished-device design), with referenced test methods for chemical analysis, microstructure and tensile testing.

Key topics and technical requirements

• Scope: Characteristics and test methods for wrought stainless steel used in surgical implants.
• Chemical composition: Limits given for main elements (examples from Table 1):
  • Carbon ≤ 0.030%
  • Silicon ≤ 0.75%
  • Manganese ≤ 2.0%
  • Phosphorus ≤ 0.025%
  • Sulfur ≤ 0.010%
  • Nitrogen ≤ 0.10%
  • Chromium 17.0–19.0%
  • Molybdenum 2.25–3.00%
  • Nickel 13.0–15.0%
  • Copper ≤ 0.50%
  • Cobalt