Size Range : Od
4mmto 100mm 0.2mm Min.
Trade Name : Svmc Albrass
Application : Power Plants, Desalination Plants,
Heat Exchanged adaptors, Refineries, Offshore Oil Rigs,
Condensers, Ferrules, Evaporator, and Distillers
Characteristic
A Copper Zinc Alloy containing tin and small amount of
Arsenic which is, added as an inhibitor against
dezincification. Inhibited Aluminum Brass resists the
action of high velocity salt and brackish water and is
commonly used for condenser tube. The outstanding
characteristics of Aluminum Brass are the high
resistance to impingement Attack Tubes of this alloy are
recommended For use in marine and land power stations
where cooling water velocities are high and where
inhibited admiralty brass has failed Impingement
Guide to the selection of tube material:
Sea Water: -
a. Dissolved salts more than 2000 ppm
b. Suspended solids more than 30 ppm
c. H2C or Ammonia is less than 1 ppm
d. Permissible average velocity of water 2.0-2.5
miters/sec.
TEST:
Drift test, Flattening test, Mercurous nitrate test, M.N
test, Eddy current test as per specification.
Chemical Composition Of Brass
ALLOY
|
STD APPLIED
|
ALLOY
DENOTATION
|
SYMBOL
|
CU
|
PB
|
FE
|
ZN
|
P
|
AL
|
SN
|
AS
|
TOTAL
IMPURITIES |
Svmc
Aluminium
Brass |
BS |
2871 PART3 |
CZ - 110
|
76.0-78.0
|
0.07
|
0.06 |
REMAIN |
- |
1.8-2.3
|
- |
0.02-0.06
|
0.3 |
|
ASTM |
B - 111 |
C 68700
|
76.0-79.0
|
0.07
|
0.06 |
REMAIN |
- |
1.8-2.5
|
- |
0.02-0.06
|
- |
|
DIN |
1785 |
CuZn20 AL2
|
76.0-79.0
|
0.07
|
0.07 |
REMAIN |
0.01 |
1.8-2.3
|
- |
0.02-0.035
|
0.1 |
|
NFA |
51-102 |
CuZn 22 AL2
|
76.0-79.0
|
0.07
|
0.06 |
REMAIN |
- |
1.8-2.5
|
- |
0.02-0.06
|
0.3 |
|
JIS |
H- 3300 |
C 6870
|
76.0-79.0
|
0.07
|
0.06 |
REMAIN |
- |
1.8-2.5
|
- |
0.02-0.06
|
- |
|
JB |
1545 |
CuZn 21 AL2
AS
|
76.0-78.0
|
0.07
|
0.06 |
REMAIN |
- |
1.8-2.3
|
- |
0.02-0.06
|
0.3 |
Physical Composition Of Brass
|
ALLOY |
STD
APPLIED
|
SYMBOL |
CONDITION |
YIELD, STRENGTH N/mm2
|
TENSILE N/mm2
|
ELONGATION %
|
HARDNESS
HV 5
|
GRAIN
SIZE
Mm (75X) |
|
Svmc
Aluminium Brass |
BS
|
CZ - 110
|
M, TA, O
|
- |
- |
- |
150MIN,
80-110, , 75 MAX
|
0.05 MAX. |
ASTM
|
C 68700
|
0 61
|
125-105
|
345
|
- |
- |
.010-.045 |
DIN
|
CuZn20 AL2
|
F 39, F 34
|
150-230,
120-180 |
390 MIN,
340MIN.
|
45MIN,
55MIN.
|
- |
- |
NFA
|
CuZn 22 AL2
|
- |
- |
- |
- |
80-130
|
.010-.045 |
JIS
|
C 6870
|
O
|
- |
373
|
40
|
- |
.010-.045 |
|
IS |
CuZn 21
AL2AS
|
O, TA, oD
|
400mpaMax,335mpa Max,415mpaMax
|
- |
85 Max, 80-
110,130Min
|
- |
.010-.045 |
|
