← Back to all grades

W302 Welding Wire

Material: W302 / 1.2367 / Uddeholm 8407
Hardness: 48–52 HRC
πŸ”₯ Ultra Thermal Checking Resistant Steel

Application: High-performance aluminum die-casting inserts, hot extrusion dies, and heavy-duty thermal stress tooling. Elevated molybdenum (~3% Mo) provides exceptional resistance to thermal fatigue cracking.

W302 1.2367 TIG Welding Wire Sealed PP Tube Packaging
Sealed PP Tube Packaging
W302 1.2367 Laser Welding Wire Clean Surface Detail
Clean Wire Surface Detail

Select Welding Process & Diameters

Choose between Laser Welding or TIG Welding wire specifications.

0.2
mm
Spool / Rods
0.3
mm
Spool / Rods
0.4
mm
Spool / Rods
0.5
mm
Spool / Rods
0.6
mm
Spool / Rods
Custom
Other Sizes
Contact Us β†’
0.8
mm
10 rods / tube
1.0
mm
10 rods / tube
1.2
mm
10 rods / tube
1.6
mm
10 rods / tube
2.0
mm
10 rods / tube
2.4
mm
10 rods / tube
Custom
Other Sizes
Contact Us β†’

TECHNICAL DATA SHEET (TDS) & PROCESS GUIDE Standard: BΓ–HLER W302 / DIN 1.2367 / Uddeholm 8407

1. Chemical Composition (wt%)

Element C Si Mn Cr Mo V Fe
Specification 0.35–0.40 0.30–0.50 0.30–0.50 4.80–5.20 2.70–3.20 0.45–0.55 Balance

2. Welding Parameters: Laser vs. TIG

⚑ Laser Welding 0.2–0.6 mm

Preheat Temp Room Temp – 100Β°C
Pulse Power 120–220 A
Shielding Gas Argon β‰₯99.99% (3–6 L/min)
HAZ Impact Minimal HAZ, preventing micro-crack propagation

πŸ”₯ TIG Welding 0.8–2.4 mm

Preheat Temp 320Β°C – 400Β°C Mandatory
Welding Current 40–120 A (DCEN)
Shielding Gas Argon β‰₯99.99% (8–12 L/min)
Post-Heat Slow cooling followed by stress relief

πŸ’‘ Key Repair & Operation Instructions:

  • High Molybdenum Advantage: W302 / 1.2367 contains ~3% Mo, offering superior hot strength and exceptional resistance to heat checking cracks under cyclic die-casting thermal shocks.
  • Preheating Requirement (TIG): High hardenability requires **strict preheating to 320Β°C–400Β°C** before TIG repair to avoid cold cracking.
πŸ”— Related Hot Work & Alternative Grades You May Need:
H13 / 1.2344 (Standard Die-Casting) H11 / 1.2343 (High Toughness) DIEVAR / 8418 (Premium Toughness) SKD11-3 (High Impact Repair)
Request Price Quote for W302