Aluminum alloy picker
6061 vs 6063 vs 6005A vs 7075. Answer 4 short questions and get an alloy + temper recommendation based on ASM/GB spec rules. This is a guide, not a live quote — mill counts come from our DB.
4 alloys, side-by-side
Answer 4 questions →
We'll recommend an alloy and temper, with specific Chinese mills that run it.
Alloy questions we get weekly
Can Chinese mills substitute 6061 for 6063 on spec-vague POs?
Some will, and will quietly ship 6061 billed as 6063 to save money if you don't specify temper + chemistry in the contract. Always require the raw billet COA and heat-treat log. A buyer who says 'any 6000-series extrusion' is inviting substitution.
What does T5 vs T6 mean?
Temper codes. T5 = cooled from extrusion + artificially aged (faster, cheaper). T6 = solution heat-treated + artificially aged (stronger, more expensive). 6063-T5 is the window industry standard. 6061-T6 is the structural industry standard.
From research to a supplier shortlist
Suppliers are ranked from public records and our published methodology — we don't sell leads or take pay-to-rank. Confirm prices and certifications directly with the supplier via RFQ.