Basic HTML Version
The Resource For All Your Welding, Gases and Safety Supplies!
The Resource - (Inert Gas Equipment)
4.10
TITANIUM (DCSP)
Welding
Amperes
Cup
Size
Filler
Rod Size
Tungsten
Size
Joint
Type
Metal
Guage
1/16
(1.6 mm)
1/16
(1.6 mm)
BUTT
FILLET
BUTT
FILLET
BUTT
FILLET
BUTT (2)
FILLET (2)
(NONE)
1/16
(1.6 mm)
Argon 15
(7)
20
90 – 110
10
(256 mm)
7
(179.2 mm)
7
(179.2 mm)
7
(179.2 mm)
8
(204.8 mm)
8
(204.8 mm)
8
(204.8 mm)
9
(230.4 mm)
110 – 150
190 – 220
210 – 250
220 – 250
240 – 280
275 – 310
290 – 340
20
20
20
15
(7)
20
(10)
30
(15)
Argon
Argon
Argon
Type
PSI
CFH
(L/MN)
4, 5, 6
5, 6, 7
6, 7, 8
8, 10
1/8
(3.2 mm)
1/8
(3.2 mm)
1/8
(3.2 mm)
1/8
(3.2 mm)
3/32
(2.4 mm)
3/32
(2.4 mm)
3/16
(4.8 mm)
1/4
( 6.4 mm)
Travel
Speed
Shield Gas Flow
STAINLESS STEEL (DCSP)
Welding
Amperes
Cup
Size
Filler
Rod Size
Tungsten
Size
Joint
Type
Metal
Guage
1/16
(1.6 mm)
1/16
(1.6 mm)
1/16
(1.6 mm)
3/32
(2.4 mm)
3/32
(2.4 mm)
BUTT
FILLET
BUTT
FILLET
BUTT
FILLET
BUTT
FILLET
1/16
(1.6 mm)
Argon 11
(5.5)
11
(5.5)
20
80 – 100
12
(307.2 mm)
10
(256 mm)
10
(256 mm)
8
(204.8 mm)
12
(307.2 mm)
12
(307.2 mm)
10
(256 mm)
10
(256 mm)
90 – 100
120 – 140
130 – 150
200 – 250
225 – 275
275 – 350
300 – 375
20
20
20
13
(6)
13
(6)
Argon
Argon
Argon
Type
PSI
CFH
(L/MN)
4, 5, 6
4, 5, 6
5, 6, 7
8, 10
1/8
(3.2 mm)
3/16
(4.8 mm)
1/8
(3.2 mm)
1/8
(3.2 mm)
3/32 – 1/8
(2.4 mm – 3.2 mm)
3/16
(4.8 mm)
1/4
( 6.4 mm)
Travel
Speed
Shield Gas Flow
LOW ALLOY STEEL (DCSP)
Welding
Amperes
Cup
Size
Filler
Rod Size
Tungsten
Size
Joint
Type
Metal
Guage
1/16
(1.6 mm)
1/16
(1.6 mm)
3/32
(2.4 mm)
3/32
(2.4 mm)
BUTT
FILLET
BUTT
FILLET
BUTT
FILLET
BUTT
FILLET
(2)
1/16
(1.6 mm)
Argon 15
(7)
15
(7)
20
95 – 135
15
(384 mm)
15
(384 mm)
10
(256 mm)
10
(256 mm)
10
(256 mm)
10
(256 mm)
11
(281.6 mm)
11
(281.6 mm)
95 – 135
145 – 205
145 – 205
210 – 260
210 – 260
240 – 300
240 – 300
20
20
20
16
(6.5)
18
(8.5)
Argon
Argon
Argon
Type
PSI
CFH
(L/MN)
4, 5, 6
4, 5, 6
8, 10
7, 8
1/8
(3.2 mm)
1/8
(3.2 mm)
5/32
(4.0 mm)
1/8
(3.2 mm)
3/16
(4.8 mm)
1/4
( 6.4 mm)
Travel
Speed
Shield Gas Flow
1/16 – 3/32
(1.6 mm – 2.4 mm)
WELDING TITANIUM
Small amounts of impurities, particularly
oxygen and nitrogen, cause embrittlement
of molten or hot titanium. The molten
weld metal in the heat-affected zones
must be shielded by a protective blanket
of inert gases. Titanium requires a strong,
positive pressure of argon or helium as
a backup on the root side of the weld,
as well as a long, trailing, protective tail
of argon gas to protect the metal while
cooling. Purge chambers and trailing
shields are available from CK Worldwide
to assist in providing quality results.
WELDING STAINLESS STEEL
In TIG welding of stainless steel, welding
rods having the AWS-ASTM prefixes of E or
ER can be used as filler rods. However, only
bare uncoated rods should be used. Stainless
steel can be welded using ACHF, however,
recommendations for DCSP must be increased
25%. Light gauge metals less than 1/16" thick
should always be welded with DCSP using
argon gas. Follow the normal precautions for
welding stainless such as: clean surfaces, dry
electrodes, use only stainless steel tools and
brushes, carefully remove soap from welds
after pressure testing and keep stainless from
coming into contact with other metals.
WELDING LOW ALLOY STEEL
Mild and low carbon steels with less
than 0.30% carbon and less than 1"
thick generally do not require preheat. An
exception to this allowance is welding on
highly restrained joints. These joints should
be preheated 50°F to 100°F to minimize
shrinkage cracks in the base metal.
Low alloy steels such as the chromium-
molybdenum steels will have hard heat
affected zones after welding, if the preheat
temperature is too low. This is caused by
rapid cooling of the base material and the
formation of martenstic grain structures.
A 200°F to 400°F preheat temperature
will slow the cooling rate and prevent the
martenstic structure.
WELDING PARAMETERS