Alloy family

Brasses

EnviB® · CW509L, CW510L · UNS C28000 · CuZn40, CuZn42, CuZn19Al6MnFe

Brasses are copper-zinc alloys for parts that are machined or formed in volume, from lead-free rods and wires to reinforced bars for aerospace.

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What brasses do well

Brass is chosen for machinability and formability. Turned, drilled and cold-formed parts come out of it at high rates and at a competitive cost.

EnviB®, our lead-free machining range

EnviB® is our range of lead-free brass, developed for parts that have been turned from leaded grades until now. EnviB® 1 and EnviB® 10 are CuZn40 grades, compliant with CW509L and listed as UNS C28000. EnviB® 58 and EnviB® 158 are CuZn42 grades, compliant with CW510L.

All four are supplied as rods and wires, and they accept cold and hot working, machining and flash welding. EnviB® 158 adds high dimensional stability for precision parts. EnviB® 58 also exists in an AM variant filed for health applications.

Typical applications

Precision optical components and electronic parts are the first uses of the EnviB® range. Watchmaking, eyewear and leather-goods hardware buy the same grades for their machinability and their surface quality. Medical devices ask for lead-free options as well.

ZA9 and Si45Z, bar grades for aerospace

ZA9 is a CuZn19Al6MnFe brass reinforced with aluminium, manganese and iron. It combines high strength with good antifriction behaviour and resists oxidation, which is why friction-guidance rings of landing gear are made from it. We supply it as bars, compliant with ASNA 3402, NFL14707, NCT 10631-11, NCT 15631-01 and NCT 15631-02.

Si45Z is a copper-silicon grade, CuSi3Fe2Zn3 and UNS C65620, that our catalogue files with the brasses. We supply it as cold-worked bars, compliant with AMS4616, for aerospace parts.

Choosing a grade with our engineers

Our engineers compare the EnviB® grades with the leaded brass you use today and confirm the substitution on your part. Not every grade exists in every form, and each product page lists the forms we hold.

EnviB®, a lead-free brass range supplied as rods and wires, compliant with CW509L (CuZn40) and CW510L (CuZn42).

ZA9, a reinforced brass bar used for landing gear friction-guidance rings, compliant with ASNA 3402 and NFL14707.

EnviB® grades that accept cold and hot working, machining and flash welding.

Range at a glance

The extent of this family's measured properties across its active variants — a range, never a single figure.

Yield strength

25 – 590 MPa

112/270 measured

Tensile strength

240 – 830 MPa

130/270 measured

Elongation

2 – 43 %

121/270 measured

Hardness HB

65 – 225 HB

39/270 measured

El. conductivity

6 – 57 %IACS

155/270 measured

Density

7.6 – 8.86 g/cm³

162/270 measured

Thermal conductivity

30 – 234 W/m·K

155/270 measured

All Brasses references

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965 references, 230 alloys, group-wide. Filter by industry, property, form or standard.

ZA9F / H3

Bars

Hollow bars, Section ≤ 2 000 mm²

CuZnAlMn

CuZn19Al6MnFe

Brasses

Yield strength: 590 MPa
Hardness: 225 HB
Density: 7.6 g/cm³
El. conductivity: 3 MS/m