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HAYNES® Alloys

Welding

As a result of its high resistance to strain-age cracking, HAYNES® 282® alloy is much more weldable than other alloys of similar strength. The preferred welding processes are gas tungsten arc (GTAW or TIG) and gas metal arc (GMAW or MIG), using 282 alloy bare filler wire. If shielded metal arc welding (SMAW) of HAYNES® 282® alloy is necessary, please contact the technical support group at Haynes International for information on the most appropriate coated electrode. Submerged arc welding (SAW) of HAYNES® 282® alloy is not recommended due to the high heat input and increased weld restraint associated with this process.

Filler Metal Selection

It is recommended that bare, filler metal of a matching composition be used to join HAYNES 282 alloy to itself, using either the GTAW or GMAW process. HAYNES 282 alloy filler metal can also be used for dissimilar joining, and/or repair welding, of other age-hardenable, nickel superalloys. Please click here or see the Haynes Welding SmartGuide for more information.

Base Metal Preparation

HAYNES 282 alloy should be welded in the solution-annealed condition, before it is subjected to the age-hardening treatment. The joint surface and adjacent areas should be thoroughly cleaned, to reveal bright, metallic surfaces, before welding. All grease, oil, crayon marks, sulfur compounds, and other foreign matter should be removed.

Preheating, Interpass Temperatures, and Postweld Heat Treatment

Preheating of HAYNES 282 alloy is not required, as long as the base metal to be welded is above 32°F (0°C). Interpass temperatures should be less than 200°F (93°C). Auxiliary cooling methods may be used between weld passes, provided that these do not introduce contaminants.

After welding, HAYNES 282 alloy will normally be subjected to its age-hardening treatment, which comprises 2 hours at 1850°F (1010°C), air cool + 8 hours at 1450°F (788°C), air cool. The heat up rate to 1850°F should be as fast as possible, within the capability of the furnace being used.

The use of a full solution anneal (typically at 2075°F/1135°C) after welding and prior to the two step age-hardening treatment is neither required nor prohibited. For heavy section weldments, or complex weldments with high residual stress, a full solution anneal prior to the age-hardening treatment may be advisable.

Nominal Welding Parameters* (Sheet) 

These are provided as a guide for performing typical operations and are based upon the welding conditions used in the laboratories of Haynes International. For further information, please contact the technical support group.

Manual Gas Tungsten Arc Welding V-Groove or U-Groove – All thicknesses 0.125” (3.2 mm) or greater
Technique Stringer Bead
Current (DCEN), amperes 150-250
Voltage, volts 11-14
Filler Metal 0.125” (3.2 mm) diameter 282®alloy
Travel Speed, in/min (mm/min 4-6 (102-152)
Electrode Size – EWTH-2, in (mm) 0.125” (3.2 mm) diameter
Electrode Shape 30° included
Cup Size #8 or larger
Gas Type Argon
Shielding Gas Flow, CFH (l/min) 30-35 (14.2-16.5)
Backing Gas Flow, CFH (l/min) 10 (4.7) for root pass
Preheat Ambient
Maximum Interpass Temperature, °F (°C) 200 (93)
Automatic Gas Tungsten Arc Welding Square Butt Joint – No filler metal added – Material thickness 0.125” (3.2 mm)
Current (DCEN), amperes 275
Voltage, volts 9.5
Travel Speed, in/min (mm/min) 12 (305)
Electrode Size – EWTH-2, in (mm) 0.125 (3.2) diameter
Electrode Shape 45° included
Cup Size #8
Shielding Gas Flow, CFH (l/min) 30 (14.2)
Shielding Gas Type Argon
Backing Gas Flow, CFH (l/min) 10 (4.7)
Backing Gas Type Argon
Gas Metal Arc Welding Synergic Mode – All thicknesses 0.09” (2.3 mm) or greater
Wire Type HAYNES®282®alloy
Wire Diameter, in (mm) 0.045 (1.1)
Feed Speed, ipm (m/min) 170-190 (4.3-4.8)
Current (DCEP), amperes 175
Voltage, volts 28-32
Stickout, in (mm) 0.5-0.75 (12.7-19.1)
Travel Speed, ipm (mm/min) 9-13 (230-330)
Torch Gas Flow, CFH (l/min) 40 (18.9)
Gas Type 75% Argon + 25% Helium

Mechanical Properties of HAYNES 282 Welds

Welded Transverse Tensile Data* For .125" (3.2 mm) Sheet
.125" (3.2 mm) Sheet Autogenously Welded, then with one Cover Pass
Cover Pass - .125" (3.2 mm) Diameter Wire

Condition Temperature 0.2% Yield Strength Ultimate Tensile Strength Fracture Location
- °F °C ksi MPa ksi MPa -
As Welded RT RT 64.7 446 125.4 865 Weld Weld
As Welded/Aged** RT RT 106.3 733 168.2 1160 Base Weld
As Welded/Solution Annealed** RT RT 66.9 461 126.8 874 Base Base
As Welded/Solution Annealed**/Aged*** RT RT 98.5 679 152.1 1049 Base Base
1000 538 83.7 577 132.0 910 Base Base
1200 649 86.1 594 135.1 932 Base Weld
1400 760 83.7 577 120.3 829 Base Base
1600 871 70.9 489 77.1 532 Base Base
1800 982 19.1 132 24.7 170 Base Weld

RT = Room Temperature

GTAW Welded Transverse Tensile Data* For .5" (12.7 mm) Plate
0.5" (12.7 mm) Plate GTAW Welded
with .125" (3.2 mm) Diameter Wire

Condition Temperature 0.2% Yield Strength Ultimate Tensile Strength Fracture Location
- °F °C ksi MPa ksi MPa -
As Welded RT RT 75.9 523 130.8 902 Weld Base
As Welded/Aged** RT RT 120.5 831 165.8 1143 Weld Weld
As Welded/Solution Annealed** RT RT 77.2 532 139.5 962 Weld Weld
As Welded/Solution Annealed**/Aged*** RT RT 94.3 650 146.1 1007 Weld Weld
1000 538 85.4 589 134.3 926 Weld Weld
1200 649 86.6 597 137.0 945 Base Base
1400 760 85.3 588 125.7 867 Base Base
1600 871 71.9 496 83.4 575 Weld Weld
1800 982 20.1 139 26.3 181 Weld Weld

GMAW Welded Transverse Tensile Data* For .5" (12.7 mm) Plate
0.5" (12.7 mm) Plate GMAW Welded
with 0.045" (1.1 mm) Diameter Wire

Condition Temperature 0.2% Yield Strength Ultimate Tensile Strength Fracture Location
- °F °C ksi MPa ksi MPa -
As Welded RT RT 77.9 537 130.4 899 Base Base
As Welded/Aged** RT RT 117.5 810 162.4 1120 Weld Weld
As Welded/Solution Annealed** RT RT 78.6 542 141.7 977 Base Base
As Welded/Solution Annealed**/Aged*** RT RT 94.4 651 155.8 1074 Base Base
1000 538 83.8 578 132.0 910 Weld Weld
1200 649 85.2 587 137.3 947 Weld Weld
1400 760 83.7 577 123.6 852 Base Base
1600 871 71.0 490 82.0 565 Weld Weld
1800 982 19.8 137 26.8 185 Weld Weld

All Weld Metal Tensile Data*
0.5" (12.7 mm) Cruciform GMAW Welded
with 0.045" (1.1 mm) Diameter Wire

Condition Temperature 0.2% Yield Strength Ultimate Tensile Strength Elongation Reduction of Area
- °F °C ksi MPa ksi MPa % %
As Welded RT RT 85.0 586 124.7 860 40.0 43.8
As Welded/Aged** RT RT 105.4 727 151.6 1045 20.3 22.4
As Welded/Solution Annealed** RT RT 81.2 560 132.4 913 40.1 45.5
As Welded/Solution Annealed**/Aged*** RT RT 100.9 696 149.3 1029 22.7 20.0

*Average of two tests
** 2075°F (1135°C)/30 min/AC
***1850°F (1010°C)/2 h/AC + 1450°F (788°C)/8 h/AC

Comparative Creep-Rupture Properties of Weld Metal to Base Metal

Temperature Stress Material Time to 1% Creep Time to Rupture
°F °C ksi MPa - h h
1400 760 50 345 Base Metal* 96.8 237.5
All Weld Metal** 197.0 364.8
1700 927 7 48 Base Metal* 335.6 792.3
All Weld Metal** 648.0 950.5

*Annealed + Age-Hardened **GMAW Welded + Annealed + Age-Hardened

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