1J85 Soft Magnetic Alloy Wire
PT-XHA-PRA-00015
View product →INDUSTRIAL PRODUCTS & MRO · SPECIAL ALLOYS
Precision Alloys
Precision alloys are iron-nickel, cobalt and copper alloys made to tightly controlled magnetic, thermal-expansion, elastic or electrical-resistance properties. The range covers soft magnetic 1J46, 1J50, 1J79 and 1J85, glass-sealing 4J29, 4J42 and 4J50, low-expansion 4J36, elastic 3J1, 3J21 and 3J53, and resistance alloys 6J11, 6J22 and 6J40 to GB/T 15018, supplied as strip, wire and bar.
Key features
- Soft magnetic permalloy-type alloys
- Glass-to-metal sealing and low-expansion alloys
- Elastic and constant-modulus alloys
- Precision resistance alloys including constantan
- Strip, wire and bar to GB/T 15018
Standards & documents: ASTM / AMS / AWS / GB product standards as listed per product; EN 10204 3.1 mill test certificates, heat traceability, ESR/VAR melting and NDT confirmed per enquiry. Pricing: on request – customised quotation.
Updated October 27, 2026 · 14 products
3J21 Cobalt-Based Elastic Alloy Wire
PT-XHA-PRA-00036
View product →6J40 Constantan Resistance Alloy Wire
PT-XHA-PRA-00030
View product →6J22 Precision Resistance Alloy Wire
PT-XHA-PRA-00031
View product →6J11 Manganese-Copper Resistance Alloy Wire
PT-XHA-PRA-00032
View product →4J36 Low-Expansion Alloy Plate (UNS K93600)
PT-XHA-PRA-00033
View product →4J29 Fe-Ni-Co Glass-Sealing Alloy Strip
PT-XHA-PRA-00034
View product →3J53 Constant-Modulus Elastic Alloy Strip
PT-XHA-PRA-00035
View product →1J79 Soft Magnetic Alloy Strip
PT-XHA-PRA-00037
View product →1J50 Soft Magnetic Alloy Bar
PT-XHA-PRA-00038
View product →1J46 Soft Magnetic Alloy Strip
PT-XHA-PRA-00063
View product →4J42 Fe-Ni Sealing Alloy Bright Bar
PT-XHA-PRA-00066
View product →4J50 Fe-Ni Sealing Alloy Precision Strip
PT-XHA-PRA-00067
View product →3J1 Elastic Alloy Strip
PT-XHA-PRA-00068
View product →FREQUENTLY ASKED QUESTIONS
Frequently Asked Questions
What is 4J36 equivalent to?
4J36 is an iron-36 % nickel alloy comparable to UNS K93600 (Invar 36), with very low thermal expansion near room temperature.
Which alloy is used for glass-to-metal seals?
4J29 (Fe-Ni-Co, comparable to ASTM F15) is matched to borosilicate hard glass; 4J42 and 4J50 are matched to softer glasses and ceramics.
Do you show prices on the website?
No. Prices depend on grade, size, quantity, melting route, testing and certificates. Request a quote with the product codes and requirements, and PANDA COLLECTIONS will reply with a customised quotation.