H62 Brass

Product Form	H62 Brass Specification Range	Standard/Condition
Plate	Thickness 0.2-100mm, Width 305-1000mm	Hot rolled (R), Soft (M), Hard (Y)
Strip	Thickness 0.1-3.0mm	M, Y₂, Y, etc.
Pipe	Outer diameter 6-530mm, Wall thickness 0.5-50mm	Cold worked or semi-hard state
Bar	Diameter 5-200mm, Length 2500-6000mm	Drawn round, black surface round
Wire	Diameter 0.5-12.7mm	Coiled or straight bars

 

Building Hardware: Door and window fittings, locks, plumbing fittings.

Electronics and Electrical Appliances: Heat exchangers, conductive terminals, switch contacts.

Mechanical Manufacturing: Screws, rivets, washers, stamped parts.

Decorative Materials: Metal mesh, decorative strips, crafts.

Industrial Equipment: Condenser tubes, heat exchangers (must be protected from seawater corrosion).

 

Annealing Process: Requires annealing at 550-650℃ after cold working to eliminate internal stress and prevent cracking.

Welding Requirements: Preferably use argon arc welding to reduce the zinc evaporation and pore defects.

Corrosion Protection: Avoid direct exposure to seawater or ammonia environments; it is recommended to add a coating or plating.

 

Property	H62 Brass	H65 Brass
Composition (Cu/Zn)	~62% Cu, ~38% Zn	~65% Cu, ~35% Zn
Copper content	Lower	Higher
Zinc content	Higher	Lower
Strength (tensile)	Higher (more Zn → solid-solution strengthening)	Slightly lower
Hardness	Higher	Moderately lower
Ductility / Formability	Good, but less than H65	Better – more suitable for severe cold working, deep drawing, bending
Corrosion resistance	Good, but slightly inferior to H65 (higher Zn increases dezincification risk)	Better – higher Cu improves general and stress-corrosion resistance
Machinability	Slightly better (higher Zn improves chip breaking)	Slightly lower (but still good)
Electrical conductivity	Lower (more Zn reduces conductivity)	Higher (closer to pure copper)
Cost	Lower (less copper)	Higher (more copper)
Typical standard	GB/T 5231, similar to C28000 (ASTM)	GB/T 5231, similar to C27000 (ASTM)

 

How to Choose – Decision Guide

Choose H62 Brass when:

Cost is a primary concern – you need a lower‑material‑cost solution.

High strength and wear resistance are more important than formability (e.g., structural parts, fasteners, valve stems, radiator cores, or stamped parts with simple shapes).

Machining is intensive – H62 gives slightly better chip control and tool life.

The working environment is relatively mild (indoor, dry, or lightly corrosive).

Electrical/thermal conductivity is not critical.

 

Choose H65 Brass when:

Heavy cold forming is required – deep drawing, complex bending, spinning, or severe stamping (H65 has better elongation and lower risk of cracking).

Corrosion resistance matters more – especially in moist, mildly acidic, or outdoor environments (higher Cu reduces dezincification).

You need better surface finish after forming (H65 tends to have fewer surface defects).

The part will be brazed or soldered – higher Cu improves wetting and joint reliability.

The application involves slight vibration or fatigue – H65's better ductility absorbs stress better.

Budget allows – the extra ~3% copper adds noticeable performance for demanding uses.