C4641 (nebaru brass)
Alloy number | Characteristic | Use |
C4641 (nebaru brass) | C4641 is said to be the nebaru brass and is the brass which added a little tin (tin: Sn) in brass. As tin is added in small quantities, I am superior in the hardness, strength, and seawater-resistant characteristics have been increasing than normal brass. Therefore it is used for Ship Division grade. | Parts for the ship |
Chemical ingredient
Alloy number | Cu | Pb | Al | Mn | Ni | Fe | Sn | As | Zn |
C4641 (nebaru brass) | 59.0 ...
62.0 | 0.50
The following | ― | ― | ― | 0.20
The following | 0.50 ...
1.0 | ― | Residue |
(percent by weight)
※It can be manufactured by cadmium 75 ppm or less in C2700, C2800, C3602, C4641, C6782.
※Our JIS approval product is C3604 square and a rectangle.
Characteristic (reference level)
Alloy number | Quality | Tensile strength
N/mm² | Growth
％ | Hardness
HV(5) | Cutting characteristics | The conductivity
IACS % | Machine workability | Bending characteristics | The extruded nature |
C4641
(nebaru brass) | Heat interval
Cold | 447
482 | 43
34 | 124
155 | 36 | 25.3 | 50 | ○ | 90 |
A note: ◎The X that is ○ suitable △ possibility suitable most is impossible
Manufacturing characteristics (I suppose it to be excellent cut brass = 100) The extruded nature (I suppose it to be excellent cut brass = 100)
Diameter of production range by the cross-section's greatest circumscribed circle
Alloy name | As pushing out | Drawing | ||
Straight angle | Variant | Straight angle | Variant | |
C4641 (nebaru brass) | 70 | 70 | 60 | 60 |
(unit mm)
Production range minimum section and wall thickness by the cross-section
Alloy name | As pushing out | Drawing | ||||||
Straight angle | Variant | Straight angle | Variant | |||||
Area
㎜² | Thickness
㎜ | Area
㎜² | Thickness
㎜ | Area
㎜²
| Thickness
㎜
| Area
㎜²
| Thickness
㎜
| |
C4641 (nebaru brass) | 24 | 3 | 24 | 3 | 27 | 3 | 27 | 3 |
(unit mm)