Free Machining Brass

Free Machining Brass
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The free machining brass produced by Powerway Alloy is analloy material with superior processing efficiency and features a longer service life compared to similar alloys on the market. Powerway is leading producer of brass alloys in both quantity and quality in China. Free machining brass is chosen for its excellent cutting and drilling performance that allow it to be easily worked on lathes and other machining equipment.

Categories: Bar & Wire production-Brass Alloy Material

Name: Free Machining Brass

Number: C3602、C3603、C3771、C3604、C3605、HPb59-1、HPb58-3

Alloy Features
Minimal damage on tools during material processing;
Processing efficiency;
Outstanding straightness :< 0.3mm/m;
Good effects for hot forging, cold heading and riveting;
Long service life;
Ovality, high tolerance, consistency ;

Specifications of the Free Machining Brass
Item Specification
ASTM DIN JIS GB
C36000 CuZn36Pb3 C3602 HPb62-3 1.0-120mm
- - C3603 -
C37700 CuZn39Pb2 C3771 HPb61-1
C38000 CuZn39Pb3 C3604 HPb60-2
C38500 CuZn40Pb3 C3605 HPb59-3
C37000 CuZn40Pb2 C3710 HPb59-1
- - - HPb58-3

Characteristics
Excellent cutting, drilling performance, able to process by hot forging, cold heading and riveting with high strength, good toughness and corrosion resistance. Excellent discoloration resistance.

Application
The metal alloy is suitable for automatic lathes, CNC lathe processing products, such as hardware, electrical connectors and standard industrial connectors.

Chemical Composition
Articles Chemical composition ( wt%) Total Impurity( wt%)
GB/QB DIN/ASTM/JIS Cu Pb Zn Fe Sn
C3602 JIS C3602 59.0-63.0 1.8-3.7 REM ≤0.5 Fe + Sn≤1.0 -
C3603 JIS C3603 57.0-61.0 1.8-3.7 REM ≤0.35 Fe + Sn≤0.6 -
C3604 JIS C3604 57.0-61.0 1.8-3.7 REM ≤0.5 Fe + Sn≤1.0 -
C3605 JIS C3605 56.0-60.0 3.5-4.5 REM ≤0.5 Fe + Sn≤1.0 -
C3771 JIS C3771 57.0-61.0 1.0-2.5 REM Fe + Sn≤1.0 -
HPb59-1 - 57.0-60.0 0.8-1.9 REM ≤0.5 - ≤1.0
HPb58-3 - 57.0-59.0 2.5-3.5 REM ≤0.5 - ≤1.2
Mechanical Properties

Articles
bar wire
Temper Specification (mm) Tensile Strength (MPa) Elongation (%) Hardness Temper Specification (mm) Tensile Strength (MPa) Elongation (%) Hardness
HPb63-3 Y(H) 5-15 ≥490 ≥3 - Y(H) 0.5-2 390-610 ≥3 -
> 15-20 ≥450 ≥8 > 2-4 390-600 ≥3
> 20-30 ≥410 ≥10 > 4-6 390-590 ≥4
Y2
(1/2H)
5-20 ≥390 ≥10 Y2
(1/2H)
0.5-6 570-735 -
> 20-60 ≥360 ≥14
H62F Y(H) 2-20 ≥380 ≥12 - Y2
(1/2H)
0.5-2 390-590 ≥8 -
> 2-4 390-590 ≥10
> 20-60 ≥340 ≥15 > 4-6 370-570 ≥12
> 6-10 350-560 ≥15
HPb59-1 Y2
(1/2H)
1-5 ≥450 ≥8 - Y2
(1/2H)
0.5-4 390-590 - -
> 5-20 ≥420 ≥10 > 4-10 360-570
> 20-40 ≥390 ≥12 Y(H) 0.5-4 490-720
> 40-60 ≥370 ≥16 > 4-10 400-640
C3501 - - - - - O > 0.5 ≥295 ≥20 -
1/2H 0.5-12 345-440 ≥10
H 0.5-10 ≥420 -
C3601 0 6-75 ≥295 ≥25 - 0 0.5-10 ≥315 ≥20 -
1/2H 6-50 ≥345 - ≥HV95 1/2H 0.5-10 ≥345 - -
H 6-20 ≥450 - ≥HV130 H 0.5-10 ≥345 - -
C3602 F 6-75 ≥315 - ≥HV75 F 0.5-10 ≥345 - -
O 6-75 ≥315 ≥20 - O 0.5-10 ≥365 - -
C3603 1/2H 6-50 ≥365 - ≥HV100 1/2H 0.5-10 ≥365 - -
C3604 H 6-20 ≥450 - ≥HV130 H 0.5-10 ≥450 - -
C3605 F 6-75 ≥335 - ≥HV80 F 0.5-10 ≥420 - -
C3771 F 6-75 ≥315 ≥15 - F 0.5-10 ≥365 ≥10 -
Y(H) 2-5 ≥490 - - Y(H) 0.5-1 520-735 - -
> 5-25 ≥450 - - > 1-6 440-710 - -
> 25-50 ≥420 - - > 6-10 410-610 - -
Mechanical Properties of Special Shaped Free Machining Brass
Articles Temper Specification Tensile Strength (Mpa) Elongation (%) Hardness
HPb59-1 HPb58-2
HPb58-3
C3604 C3605
C3771
Y2 (1/2H) S3-S5
> S5-S20
> S20-S40
≥450
≥420
≥390
≥8
≥10
≥12
-
-
-
≥8
≥10
≥12
S3-S5
> S5-S20
> S20-S40
≥480
≥450
≥420
-
-
-
-
-
-
C3501 360
C3601 C3002 C3603
Y2 (1/2H) S3-S5
> S5-S20
> S20-S40
≥420
≥390
≥360
≥10
≥12
≥14
-
-
-
Y(H) S3-S5
> S5-S20
> S20-S40
≥450
≥420
≥390
-
-
-
-
-
-
C3501 360
C3601 C3002 C3603
Y2 (1/2H) a3-a5
> a5-a20
> a20-a40
≥400
≥360
≥340
≥10
≥12
≥14
-
-
-
HPb63-3 H62 H63 Y2 (1/2H) a3-a5
> a5-a20
> a20-a40
≥390
≥360
≥340
≥12
≥14
≥15
-
-
-
HPb59-1 HPb58-2 C3601 C3602 C3603 C3604
C3605 360 C3771
Y2 (1/2H) (2-4)×(5-12)
(4-8)×(6-15)
(8-10)×(9-20)
≥400
≥380
≥350
≥10
≥12
≥14
-
-
-
HPb63-3 H62 H63 Y2 (1/2H) (2-4)×(5-12)
(4-8)×(6-15)
(8-10)×(9-20)
≥400
≥380
≥350
≥10
≥14
≥15
-
-
-
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