International Material Cross-Reference & Equivalency
Cross-reference designations across national and international standards (ASTM/UNS, EN/DIN Werkstoff, JIS, ISO, GB). Comparable does not mean equivalent. Engineering substitutions must account for differing impurity limits, testing protocols, and mechanical tolerances.
International standard designations are established by distinct standards bodies with differing testing standards (e.g. ASTM E8 vs ISO 6892-1). Even when chemical compositions overlap, allowable trace impurities (such as phosphorus, sulfur, or iron), grain size requirements, temper nomenclature, and minimum elongation criteria can differ.
Never authorize a structural alloy substitution without verifying the governing procurement specification, temper, ruling section size, and environmental compatibility.
Relationship Classification Governance
Show All TypesIdentical chemical composition and mechanical requirements across different naming authorities.
Rule: Direct 1:1 dual specification permissible subject to certified mill test reports (MTR).Officially recognized counterpart in another national or international engineering standard (e.g. ASTM to EN).
Rule: Chemical limits or testing protocols may have subtle differences (e.g. tighter P/S ceilings or impact requirements). Engineering review required before substitution.Substantially identical chemistry and overlapping mechanical envelope, but slight variations in allowable trace elements or testing protocols exist across governing standards.
Rule: Direct commercial substitution is generally permissible subject to certified Mill Test Report (MTR) confirmation for critical applications.Similar base alloy chemistry and general functional properties, but noticeable divergence in allowable impurity ceilings, cold-work response, or minimum yield requirements.
Rule: Engineering substitution review required. Design calculations must verify temper, formability, and corrosion limits before specifying as a direct replacement.Similar base chemistry and functional performance envelope, but not officially harmonized by standards organizations.
Rule: Comparable does not mean equivalent. Heat treatment response and dimensional tolerances may diverge.Close metallurgical alternative when the primary grade is unavailable or obsolete.
Rule: Design parameters (weldability, hardenability, fatigue limit) must be re-evaluated for the specific application.Frequently evaluated side-by-side during trade-off studies or alloy selection.
Rule: Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost).Materials superficially mistaken for equivalents that exhibit critical metallurgical incompatibilities.
Rule: DO NOT SUBSTITUTE without full engineering re-qualification.| Source Alloy (UNS) | Relationship Type | Target Grade / Standard | Engineering Scope & Nuance | Actions |
|---|---|---|---|---|
| C10100 Oxygen-Free Electronic (OFE) CopperPure Copper | Close Equivalent | C10200 Oxygen-Free (OF) CopperConfidence: HIGH | C10100 (OFE) is 99.99% pure with oxygen strictly <5 ppm, whereas C10200 (OF) is 99.95% pure with oxygen <10 ppm. Both exhibit identical 101% IACS conductivity; C10100 is specified when ultra-high vacuum or glass-to-metal sealing is critical. | |
| C10200 Oxygen-Free (OF) CopperPure Copper | Close Equivalent | C10100 Oxygen-Free Electronic (OFE) CopperConfidence: HIGH | C10200 offers 100% IACS conductivity and hydrogen embrittlement resistance at lower commercial cost than 99.99% C10100 OFE. | |
| C10200 Oxygen-Free (OF) CopperPure Copper | Close Equivalent | C10300 Oxygen-Free Extra Low Phosphorus (OFXLP) CopperConfidence: HIGH | Both alloys are oxygen-free coppers (>99.95% Cu); C10300 has 10-50 ppm phosphorus added for deoxidation while retaining 99% IACS conductivity. | |
| C12000 DLP CopperDeoxidized Copper | Close Equivalent | C12200 DHP CopperConfidence: HIGH | C12000 (DLP) contains 0.004-0.012% P, retaining 98% IACS conductivity, whereas C12200 (DHP) contains 0.015-0.040% P (85% IACS). Both are immune to hydrogen embrittlement. | |
| C14500 Tellurium CopperFree-Machining Copper | Close Equivalent | C14700 Sulfur CopperConfidence: HIGH | C14500 (tellurium-bearing) and C14700 (sulfur-bearing) both deliver 85% machinability rating and 90-93% IACS conductivity for automated screw-machined electrical parts. | |
| C14700 Sulfur CopperFree-Machining Copper | Close Equivalent | C14500 Tellurium CopperConfidence: HIGH | C14700 Sulfur Copper provides 85% machinability and 90% IACS conductivity. It provides an alternative to tellurium-bearing C14500 with excellent scrap recycling compatibility. |