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HSn70-1 Brass Tube For Corrosive Liquids In High Strength And
Corrosion Resistant Condenser
1. Description
HSn70-1 tin brass is a single-phase brass of Cu Zn Sn ternary
system containing micro-arsenic. The micro arsenic in the copper
tube can inhibit the dezincification corrosion and further improve
the corrosion resistance of the alloy copper tube. HSn70-1 copper
tube has good mechanical properties and is generally used to make
heat exchanger and tube contacting corrosive liquid. Especially, it
is widely used in inland thermal power plant to make high-strength
and corrosion-resistant condenser tube of heat exchanger. In recent
years, it has been proved that adding trace elements such as boron
and nickel to HSn70-1 can improve the corrosion resistance of the
alloy.
Our company's brass tube grades mainly include HAi77-2,HSn70-1,
HSn70-1B, HSn70-1AB, H68A copper tube, fin tube and U-tube. The
products are produced in strict accordance with the standard, and
the finished products can be tested by the third party according to
the customer's requirements. These copper tubes are mainly used in
power plants, desalination, petrochemical, mechanical ships and
automotive heat exchangers. We have rich production experience,
professional technology, excellent equipment, superior quality,
reasonable price, high-quality service, so that our products sell
well all over the world, well received by customers.
2. Chemical Composition
Grade | Chemical Composition | Impurity composition /%, ≤ | ||||||||||
Cu | Sn | As | B | Ni | Mn | Zn | Fe | Pb | Ai | S | ||
HSn70-1B | 69.0~71.0 | 0.8~1.3 | 0.03~0.06 | 0.015~0.02 | - | - | allowance | 0.1 | 0.05 | ≤0.3 | ||
HSn70-1AB | 69.0~71.0 | 0.8~1.3 | 0.03~0.06 | 0.015~0.02 | 0.05~1.00 | 0.02~2.0 | allowance | 0.1 | 0.05 | ≤0.3 | ||
HAi77-2 | 76~79 | 0.02~0.06 | 0.5 | allowance | 0.06 | 0.07 | 1.8~2.5 | —— | ||||
T2 | 99.9 | 0.002 | 0.005 | 0.005 | 0.005 | —— |
3. Physical Properties
Grade | Supply Status | Specifications/mm | Standard | ||
OD | Wall Thickness | Length | |||
HAl77-2;HSn70-1; | soft(M)Semi hard(Y2) | 6~30 | 0.5~2 | ≤12000 | GB/T8890-2007 |
HSn70-1B; | |||||
HSn70-1AB; | |||||
H68A;HSn70A; | |||||
BFe10-1-1 | Semi hard(Y2) | 9~12(20~35) | 0.75~1.5 | ≤2500 | GB/T8890-2007 |
LF21Clad pipe |
4. Details Picture