Nacobre Denomination: 122
Designation: Phosphorus Deoxidized
High Residual Phosphorus (DHP)

Nacobre Deoxidized High Residual Phosphorus is pure electrolitically refined copper, deoxidized with phosphorus. Tubes of phosphorus-deoxidized copper have, for years, found wide and satisfactory applications in chemical and industrial heat exchangers, condensers and evaporators. They are also used in feedwater heaters and similar auxiliaries in stationary steam power plants and air-conditioning equipment. Phosphorized Copper Tubes are used in sugar house and refinery heaters and in calandria pans. Nacobre Copper Tubes have the highest thermal conductivity of any of the standard heat exchanger tubes. They are, therefore, suitable for many industrial purposes where this property and corrosion resistance are desirable.

FEASIBLE DIMENSION


Straight lengths:

Diameter up 1.250” are produced from 8 to 40 Ft.
Diameter over than 1.250” are produced from 8 to 30 Ft.
If other lengths area required please check with the mill.

 

 

CHEMICAL COMPOSITION

Alloy

Cu (%)

P(%)

C12200

99.9 Min.

0.015 – 0.040

MECHANICAL PROPERTIES


Alloy

Temper

Tensile
Strength
(ksi)

Yield
Strength
(ksi)

Expansion
%

Flattening

C12200

H55

36 Min.

30 Min.

 

Req.

C12200

H80

45 Min.

40 Min.

20 Min.

Req.


PHYSICAL PROPERTIES

 

UNITS

C12200

MELTING POINT
(LIQUIDUS)

°F (°C)

1981 (1083)

MELTING POINT
(SOLIDUS)

°F (°C)

 

DENSITY (TO 20°C)

Lb/cu,in

0.323

COEFICIENT OF THERMAL
EXPANSION

per °F From
68 to 572

9.8 x 10 –6

THERMAL CONDUCTIVITY

Btu/sq.ft./ft/hr/
°F to 68°F

196

ELECTRICAL RESISTIVITY
(ANNEALED)

Ohms
(circ.mil./ft) to
68 °F

12.2

ELECTRICAL
CONDUCTIVITY
(ANNEALED)

% IACS to
68°F

85

THERMAL CAPACITY
(SPECIFIC HEAT)

Btu/lb/°F to
68|°F

0.09

MODULUS OF ELASTICITY
(TENSION))

Ksi

17000

MODULUS OF RIGIDITY

Ksi

6400

ANNEALED TEMPERATURE

°F - °C

700-1200 - 375-650

SUITABILITY FOR BEING JOINED BY


 

Alloy

Soldering

Brazing

Oxyacetylene
Welding

Carbon Arc
Welding

C12200

Excellent

Excellent

Good

Good


 

 

 

 

 

 

Alloy

Gas
Shielded
Arc
Welding

Coated Metal
Arc Welding

Resistance welding

Spot

Seam

Butt

C12200

Excellent

Not
recommen
ded

Not
recommen
ded

Not
recommen
ded

Good

DECIMAL EQUIVALENTS IN INCHIDES FOR VARIOUS GAGES

Gage. No.

1

2

3

4

5

6

BWG

.0.300

0.284

0.259

0.238

.0.220

0.203

AWG

0.2893

0.2576

0.2294

0.2043

0.1819

0.162

Gage. No.

7

8

9

10

11

12

BWG

0.180

0.165

0.148

0.134

0.120

0.109

AWG

0.1443

0.1285

0.1144

0.1019

0.0907

0.0808

Gage. No.

13

14

15

16

17

18

BWG

0.095

0.083

0.072

0.065

0.058

0.049

AWG

0.0720

0.0641

0.0571

0.0508

0.0453

0.0403

Gage No.

19

20

21

22

23

24

BWG

0.042

0.035

0.032

0.028

0.025

0.022

AWG

0.0359

0.0320

0.0285

0.0253

0.0226

0.0201

NON DESTRUCTIVE TESTS AVAILABLE

EDDY CURRENT TEST

HYDROSTATIC TEST

PNEUMATIC TEST

MAXIMUM WORK PRESSURE

P = Maximum work pressure (psi)
S = Minimum tensile strength of material for anSpecific temper (It is the the value of theTensile strength in psi in MechanicaProperties table)
D = Exterior diameter of tube
T = Wall thickness of tube

 

APPLICABLE STANDARDS

ASTM
ASME
BRITISH STANDARD
DIN
JIS
MIL

WEIGTH PER FEET

W= WEIGTH PER FEET( lb/ft)

D= OUTSIDE DIAMETER( in)

P= WALL THICKNESS ( in)

W= ( D-P)*P*12.18

Note: The cracking pressure is the value of 5 times the work pressure.