Brass & Special Brass CuZn37Mn3Al2PbSi (CW713R)

CuZn37Mn3Al2PbSi is the high-strength structural material among the special brasses. Manganese, aluminium and silicon lift strength and wear resistance well above the level of ordinary brasses and make the material particularly interesting for sliding loads. Under EN it is designated CW713R, under the earlier DIN designation it is known as CuZn40Al2 with the number 2.0550.

Added to this is good resistance to atmospheric corrosion, to slightly aggressive waters and gases and to oil corrosion. Machinability is medium.

We supply CuZn37Mn3Al2PbSi as round bars, flat bars, hexagonal bars and tubes ex stock. Cut to your dimensions, no minimum order.

Properties

Chemical properties

Cu	57,0 - 59,0 %
Al	1,3 - 2,3 %
Mn	1,5 - 3,0 %
Fe	max. 1,0 %
Ni	max. 1,0 %
Pb	0,2 - 0,8 %
Si	0,3 -1,3 %
Sn	max. 0,4 %
Zn	Rest
Others	max. 0,3 %

Mechnical properties - bars

Condition	Tensile strength R_m N/mm²	Yield strength R_{p 0,2} N/mm²	Elongation A %	Hardness HB
Round bars
Ø 5 - 50 mm R590 - H150	≥ 590	ca. 370	≥ 10	150 -220
Ø 31- 50 mm R540 - H130	≥ 540	ca. 280	≥ 15	130 - 170
< 81 mm M	*	*	*	*
Flat bars
M	*	*	*	*
R540	≥ 540	≥ 280	≥ 15	130 - 170
Hexagon bars
SW 5 - 40 mm R590 - H150	≥ 590	≥ 370	≥ 10	150 -220
SW 41- 60 mm R540 - H130	≥ 540	≥ 280	≥ 15	130 - 170
Hollow bars
gepresst M	*	*	*	*
Wandstärke 5-10 mm R590 - H150	≥ 590	≥ 330	≥ 10	150 -190
Wandstärke 10-30 mm R540 - H130	≥ 540	≥ 280	≥ 15	130 - 170

Density approx. 8.1 g/cm³

Product variants

Round bars

Alloy	CuZn37Mn3Al2PbSi, CW713R
Variant	< Ø 65 mm extruded and drawn Ø 70 -130 mm extruded Ø 140 - 303 mm cast & machined
Norm	DIN EN 12164
Tolerance	extruded and drawn DIN 1756, h11 Ø 6 mm + 0 / - 0,08 mm Ø 8 - 10 mm +0/-0,09 mm Ø 11 - 18 mm +0/-0,11 mm Ø 19 - 30 mm +0/-0,13 mm Ø 31 - 50 mm +0/-0,16 mm Ø 51 - 75 mm +0/-0,19 mm extruded / cast DIN 1782 Ø 70 - 80 mm +0/-0,08 mm Ø 81 - 120 mm +0/-1,2 mm Ø 130 - 200 mm +0/-0,5 mm Ø 223 - 303 mm +3/-0 mm
Datasheet	Datasheet

Flat bars

Alloy	CuZn37Mn3Al2PbSi, CW713R
Variant	< 50 x 50 mm extruded and drawn > 60 x 20 mm extruded
Norm	DIN EN 12 164 / 12 167
Tolerance	extruded and drawn DIN 1761, h13 extruded EN 12 167 Klasse A
Datasheet	Datasheet

Hexagon bars

Alloy	CuZn37Mn3Al2PbSi, CW713R
Variant	extruded and drawn
Norm	DIN EN 12164
Tolerance	SW 14 - 18 mm +0/-0,11 mm SW 19 - 30 mm +0/-0,13 mm SW 31 - 50 mm +0/-0,16 mm SW 51 - 60 mm +0/-0,19 mm
Datasheet	Datasheet

Hollow bars

Alloy	CuZn37Mn3Al2PbSi, CW713R
Variant	< Ø 65 mm extruded and drawn > Ø 65 mm extruded
Norm	DIN EN 12168
Tolerance	extruded and drawn DIN 12168 OD Klasse C / ID Klasse B extruded OD 66 - 77 mm OD +/- 0,6 mm / ID +/- 0,95 mm < OD 82 mm OD +/- 1,6 mm / ID +/- 0,95 mm
Datasheet	Datasheet

Similar materials

CuZn40Al2, 2.0550, DIN 17 660
C67400 UNS
CZ 135 BS, 2870-2875

Typical applications

Structural parts in mechanical engineering
Plain bearings and sliding elements with high wear requirements
Valve guides
Gearbox components
Piston rings

Our offer – Your benefits

Webshop

Our modern system lets you check stock levels and prices instantly.

Customer service

And whenever you prefer a personal touch, we are here with prompt, professional answers.

Comprehensive range

Our extensive stock means we supply the right items reliably, without bottlenecks.

Fast and easy delivery

We accommodate your requirements and deliver even small quantities free of charge.

Rely on Schreier Metall, your partner for special brass in CuZn37Mn3Al2PbSi and other non-ferrous metal semi-finished products. We offer reliability, fair prices and consistently secure supply. Get in touch, we are glad to advise you.