DAIKOWT 4130

GTAW
  • HIGH YIELD STRENGTH STEELS
130ksi

Description

Low alloy solid wire for high yield strength steels
This high strength low alloy consumable is designed to weld alloys of similar composition, requiring 130 Ksi minimum tensile strength. It displays good mechanical properties and is suitable for applications on strongly stressed structures. To obtain high static strength and high impact toughness in the welded joint, it is important not to exceed 0,8 kJ/mm heat input during welding. It is not recommended to stress relieve the weldment by post weld heat treatment.
Specifications
Werkstoff Number
1.7218
Shielding
I1
Positions
PA, PB, PC, PD, PE, PF
Current
DC-
Packaging Type
5kg carton tube
Chem. Comp. %
DEFAULT
C
0.3
Mn
0.5
Ni
0.01
Cr
1
P
0.015
S
0.01
Mo
0.2
Si
0.3
Cu
0.15
Mechanical Properties
min
variant
Tensile strength Rm MPa
-
1150
Yield strength Rp0.2 MPa
-
1100
Elongation A (L0=5d0) %
-
-
Impact Charpy ISO-V
-
-
Impact Charpy ISO-V
-
-
Welding Parameters
1.6 mm
2.4 mm
Ampere
95A - 135A
145A - 205A
Voltage
-
-
Packaging
Ø 1,2÷3,2mm
Ø 1,2÷3,2mm
Packaging Type
5kg carton tube
5kg carton tube
Anti-wear Characteristics
Adhesive wear
Abrasive wear
Impact
Corrosion
Heat
Description

Application

This high-strength, low-alloyed chromium/molybdenum filler metal is employed in various applications, including the aeronautical sector and the construction of connecting rods for the automotive industry. It is also utilized in fixing parts, gears, bolts, axes, and similar components. Preheating is recommended in accordance with the base material and its thickness. Materials likely to be welded using these higher-strength consumables typically require a minimum preheat of 100°C. For some high-strength, low-alloy (HSLA) steels, caution should be exercised, as interpass temperatures exceeding 200°C may lead to a reduction in strength and toughness. Post-weld heat treatment (PWHT) requirements generally depend on the specific base material and application, warranting consideration on a case-by-case basis.

Alloy Type

Mn-Cr-Mo low alloy consumables for welding high strength steels with ultimate tensile strength up to 900 MPa (130 ksi).

Microstructure

The microstructure of all the consumables is predominantly ferrite; some will contain high proportions of acicular ferrite for optimum aswelded toughness.

Materials

This material is used for welding high strength steels such as 4130.
ASTM: 4130, 8630, 4140.

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