Free Cutting Brass Wire

  • BS249
  • IS:319 Gr. l & ll
  • IS:8364 Gr. l & ll
  • BS:2874 CZ121Pb3
  • CuZn39Pb3
Chemical RequirementsGrade IGrade IIGrade III
Copper56.0 – 59.0%60.0 – 63.0%60.0 – 63.0%
Lead2.0 to 3.50%2.50 – 3.70%0.50 – 1.50%
Iron0.35% max0.35% max0.20% max
Total Imp. Excl. Iron0.70% max0.50% max0.50% max
ZincRemainderRemainderRemainder
Physical PropertiesGrade IGrade IIGrade III
ConditionSizeT.S. MPAEL% MinT.S. MPAEL% MinT.S. MPAEL% Min
Annealed (O)6-25
25-50
50 above
345
315
285
12
17
22
355
305
275
15
20
25
315
285
255
22
27
32
Half-Hard (HB)6-12
12-25
25-50
50 above
405
395
355
325
4
6
12
17
395
385
345
315
7
10
15
20
355
345
305
285
8
12
22
27
Hard (HD)6-12
12-25
550
485

4
550
485

4
460
400

4
Fabrication PropertiesGrade IGrade IIGrade III
Capacity for being
Cold workedPoorPoorPoor
Hot formedFairFairFair
Machinability Rating100%90%90%
Suitability for solderingExcellentExcellentExcellent
Suitability for BrazingGoodGoodGood
Uses
Precision Components, Hardware, Hinges, Lock Bodies, Screws, Nuts & Bolts
Gr II : Gear, Pinions, Precision, Automobile, Electronic Parts
Gr III : Precision Components Machining with Riveting Operation

Free Cutting Brass Wire

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