Standard Harmonization • Qualified Cross-Referencing
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.
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Mandatory Engineering Substitution Governance:
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
Exact Designation
Identical chemical composition and mechanical requirements across different naming authorities.
Rule: Direct 1:1 dual specification permissible subject to certified mill test reports (MTR).Standard Cross-Reference
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.Close Equivalent
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.Approximate Equivalent
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.Comparable Grade
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.Nearest Alternative
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.Commonly Compared
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).Not Equivalent (Caution)
Materials superficially mistaken for equivalents that exhibit critical metallurgical incompatibilities.
Rule: DO NOT SUBSTITUTE without full engineering re-qualification.Verified Relationships (24 Mappings)100% Item-Level Provenance
| 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. | |
| C10100 Oxygen-Free Electronic (OFE) CopperPure Copper | Nearest Alternative | C11000 ETP CopperConfidence: HIGH | C10100 is vacuum-melted oxygen-free copper, eliminating the cuprous oxide (Cu2O) inclusions found in C11000 ETP Copper. This provides immunity to hydrogen embrittlement during brazing/welding above 370°C. | |
| 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. | |
| C10200 Oxygen-Free (OF) CopperPure Copper | Nearest Alternative | C11000 ETP CopperConfidence: HIGH | C10200 provides 100% IACS conductivity without the dissolved cuprous oxide present in C11000, eliminating hydrogen embrittlement risk during torch brazing. | |
| C10300 Oxygen-Free Extra Low Phosphorus (OFXLP) CopperDeoxidized Copper | Nearest Alternative | C10200 Oxygen-Free (OF) CopperConfidence: HIGH | C10300 (OFXLP) contains 0.001-0.005% P deoxidizer, retaining 99% IACS conductivity with complete immunity to hydrogen embrittlement. C10200 is unalloyed oxygen-free copper (100% IACS) without phosphorus. | |
| C10300 Oxygen-Free Extra Low Phosphorus (OFXLP) CopperDeoxidized Copper | Nearest Alternative | C12000 DLP CopperConfidence: HIGH | C10300 has extra low phosphorus (0.001-0.005%) for 99% IACS conductivity, whereas C12000 has 0.004-0.012% P for 98% IACS conductivity. | |
| C10300 Oxygen-Free Extra Low Phosphorus (OFXLP) CopperDeoxidized Copper | Nearest Alternative | C11000 ETP CopperConfidence: HIGH | C10300 is deoxidized with phosphorus, enabling reliable brazing in reducing atmospheres without hydrogen embrittlement, at 99% IACS conductivity vs 101% for C11000. | |
| 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. | |
| C12000 DLP CopperDeoxidized Copper | Nearest Alternative | C10300 Oxygen-Free Extra Low Phosphorus (OFXLP) CopperConfidence: HIGH | C12000 contains slightly higher residual phosphorus (0.004-0.012%) than C10300 (0.001-0.005%), providing 98% vs 99% IACS conductivity. | |
| C12000 DLP CopperDeoxidized Copper | Nearest Alternative | C11000 ETP CopperConfidence: HIGH | C12000 is deoxidized with phosphorus, enabling reliable brazing and welding without hydrogen embrittlement, at a modest conductivity penalty (98% vs 101% IACS for C11000). | |
| C12200 DHP CopperDeoxidized Copper | Nearest Alternative | C12000 DLP CopperConfidence: HIGH | C12200 (DHP) is the worldwide standard for plumbing, refrigeration, and gas lines, deoxidized with 0.015-0.040% phosphorus. C12000 has lower phosphorus (0.004-0.012%) for higher electrical conductivity. | |
| C12200 DHP CopperDeoxidized Copper | Nearest Alternative | C11000 ETP CopperConfidence: HIGH | C12200 is phosphorus-deoxidized for outstanding brazability and formability in tubing applications, while C11000 is tough pitch copper optimized for maximum electrical conductivity in busbars and conductors. | |
| 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. | |
| C14500 Tellurium CopperFree-Machining Copper | Commonly Compared | C11000 ETP CopperConfidence: HIGH | C14500 provides 85% machinability rating and 93% IACS conductivity for high-speed CNC turning, whereas C11000 provides 101% IACS but only 20% machinability rating. | |
| C14500 Tellurium CopperFree-Machining Copper | Commonly Compared | C36000 Free-Cutting BrassConfidence: HIGH | C14500 offers 93% IACS electrical conductivity with 85% machinability rating, whereas C36000 offers 100% machinability but only 28% IACS conductivity. | |
| 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. | |
| C14700 Sulfur CopperFree-Machining Copper | Commonly Compared | C11000 ETP CopperConfidence: HIGH | C14700 enables automated high-speed machining (85% rating) with 90% IACS conductivity, compared to 20% machinability and 101% IACS for C11000. | |
| C19400 High-Strength Modified Copper (HSM Copper)High-Performance Copper Alloys | Commonly Compared | C11000 ETP CopperConfidence: HIGH | C19400 (Cu-Fe-P) provides superior resistance to softening at elevated soldering temperatures and higher yield strength for electronic leadframes, with 65% IACS conductivity vs 101% for C11000. | |
| C19400 High-Strength Modified Copper (HSM Copper)High-Performance Copper Alloys | Commonly Compared | C51000 Phosphor Bronze 5% AConfidence: HIGH | C19400 provides higher electrical conductivity (65% vs 15% IACS) for high-current electronic terminals, whereas C51000 provides higher fatigue endurance for flexible spring contacts. | |
| C36000 Free-Cutting BrassFree-Machining Brass | Commonly Compared | C26000 Cartridge Brass 70/30Confidence: HIGH | C36000 Free-Cutting Brass contains ~3% lead for optimal 100% machinability rating and chip breaking in turning operations. C26000 Cartridge Brass contains no lead and provides superior cold drawing and stamping capability. | |
| C36000 Free-Cutting BrassFree-Machining Brass | Commonly Compared | C46400 Naval BrassConfidence: HIGH | C36000 is optimized for automated high-speed turning (100% machinability rating), whereas C46400 is optimized for marine corrosion resistance and strength (30% machinability rating). | |
| C36000 Free-Cutting BrassFree-Machining Brass | Commonly Compared | C14500 Tellurium CopperConfidence: HIGH | C36000 provides 100% machinability rating with 28% IACS conductivity, whereas C14500 provides 85% machinability rating with 93% IACS conductivity. | |
| C36000 Free-Cutting BrassFree-Machining Brass | Commonly Compared | C11000 ETP CopperConfidence: HIGH | C36000 is a leaded brass optimized for precision machining (100% rating) with tensile strength 340-470 MPa, whereas C11000 is unalloyed copper providing 101% IACS conductivity but low machinability (20%). |