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ASTM C23030 Common Brass Seamless Tubes With Great Corrosive Resistance
1. Description
ASTM C23030 brass pipe has high strength, good plasticity and high corrosion resistance in atmosphere, fresh water and sea water.
Brass is an alloy of copper and zinc. If it is only made of copper and zinc, it is called ordinary brass. If the alloy is composed of more than two elements, it is called special brass. Such as lead, tin, manganese, nickel, lead, iron, silicon copper alloy and so on. Brass has a strong wear resistance. It has high strength, high hardness and strong chemical corrosion resistance. The mechanical properties of cutting are also outstanding. The seamless copper tube drawn by brass is soft and wear-resistant. Brass seamless tube can be used in heat exchanger and condenser, low temperature pipeline and submarine transportation pipeline.
2. Chemical composition
| Cu :79．0～81．0 |
Zn:Remain |
Pb:≤0．03 |
P:≤0．01 |
Fe:≤0．10 |
Sb :≤0．005 |
Bi:≤0．002 |
| Impurity:≤0.3 |
3. Mechanical properties
Tensile strength: (σ B / MPA) ≥ 275
Elongation: (δ 10 /%) ≥ 35
Elongation: (δ 5 /%) ≥ 45
4. Standard comparison
| Category | China | US | UK | Germany | Japan | ||
| GB | ASTM | CDA | BS | DIN | Digital system | JIS | |
| Common Brass | - | C23030 | - | - | - | - | - |
5. OD table and tolerance
| T mm OD mm | 0.15--0.2 | 0.2--0.3 | 0.3--0.5 | 0.5--0.8 | 0.8--1.2 | 1.2--1.8 | 1.8--2.5 | 2.5--3 | 3--4 |
| 2.5--5 | √ | √ | √ | ||||||
| 6--10 | √ | √ | √ | √ | √ | ||||
| 11--15 | √ | √ | √ | √ | √ | ||||
| 16--20 | √ | √ | √ | √ | |||||
| 20--25 | √ | √ | √ | √ | √ | ||||
| 25--35 | √ | √ | √ | √ | √ | ||||
| 35--45 | √ | √ | √ | √ | √ | √ | |||
| 45--55 | √ | √ | √ | √ | √ | √ |
| outside diameter | Average tolerance | |
| General (±mm) | high(±mm) | |
| 3--15 | 0.09 | 0.05 |
| 15--25 | 0.1 | 0.06 |
| 25--50 | 0.15 | 0.08 |
6. Wall Thicknese and tolerance
| wall thickness | Average tolerance | |
| General(mm) | high(mm) | |
| 0.2--0.5 | ±0.02--0.05 | ±0.01--0.03 |
| 0.5--0.8 | ±0.05--0.08 | ±0.02--0.05 |
| 0.8--1.5 | ±0.08--0.15 | ±0.05--0.12 |
| 1.5--2.5 | ±0.15--0.25 | ±0.12--0.2 |
| 2.5--4 | ±0.25--4 | ±0.2--0.3 |
7. Details picture