Specialist materials

Suitability of various materials for EBW



  Material Specification Nos. of Typical Examples (BS Designation) Welding Recommendations
STEELS Carbon & Carbon Manganese steels (Carbon & Low Alloy steels New

070M20
080M37
150M19
Old

(EN 3A)
(EN 8B)
(EN 14A)
Low carbon grades (up to about 0.3%C generally weld satisfactorily). Treat higher carbon grades with caution. Avoid welding free machining grades.
Direct hardening steels 605A37
708M40
722M24
(EN 16B)
(EN19A)
(EN 40B)
Treat with caution. Weld development essential. Welding to low carbon or stainless steel grades advantageous.
Case hardening steels 637M15
659M15
(EN 37I)
(EN 39A)
Generally weldable but case hardening must be kept clear of join interfaces and immediately adjacent surfaces.
STAINLESS, HEAT RESISTING AND VALVE STEELS   371S12
410S21
431S29
(EN 58B)
(EN 56A)
(EN 57)
Generally weldable but avoid grades containing high carbon, molybdenum and tungsten
  SAE 30304,
30316, 30371AISI 304, 
316, 371
 
NICKEL BASE ALLOYS   Nimonic 75,  80AInconelIncoloy  DSNispan CC263 Generally weldable. Treat higher nimonics with caution. Can also be welded to some steel and copper base alloys.
COPPER AND COPPER BASE ALLOYS   OFHC Copper
Cupro-Nickel
Aluminium-Bronze
Berylium Copper
Phosphur Bronze
Generally weldable. Can also be welded to some steel and nickel base alloys
REFRACTORY METALS AND ALLOYS   Titanium
Zirconium/Zircaloy
NiobiumTantalum
Generally weldable but not dissimilar metals and/or alloys
ALUMINUM Wrought Alloys, sheet bar and extrusion New

1080
1050A
1200
3103
3105
5005
5083
5154A
5251
5454
6061
6063
6082
7020
L53
L11,13
Old

1A
1B
1C
N3
N31
N41
N8
N5
N4
N52
N20
H9
H30
H17
Good surface preparations required on weld joint areas. Specifications listed include sheet, plate, bar, tube formed as cold rolled, drawn forged or extruded sections. Generally weldable without problems.
Cast Alloys LMO
LM5
LM6
LM9
LM10
LM25
  Weld quality very dependant on that of parent metal. Cast materials can be welded to wrought aluminum alloys.
Problem specs Wrought materials Current

2031
7010
Old

H12
DTD
5120B
DTD
5130
Difficult materials subject to weld development and specific joint design
7020 H17
7075 L88
L95
DTD
5110
DTD
5124
L51, 52, 99 DTD
716b
DTD
722b
DTD
727b
DTD
737b
DTD
5008b
DTD
5013b
Castalloys LM2, 6, 9, 10, 13, 20, 27, 28, 29  
Unweldable specs. Wrought materials 2011, 2014A, 2024, L91, 92, 37119, 154, 155 FC1
H15
Unweldable materials mainly due to severe cracking problems
Castalloys LM4, 12, 21, 22, 24, 26, 30  
SPECIAL MATERIALS

Weldable
Hastelloy 
Stellite
Cobalt Chrome
Maraging Steel
JetheteMumetal
P.H. Stainless
     
Unweldable Zinc, Cadnium, Brass, Cast Iron, Tungsten 
High Carbon Steels Tool & Die steels Cobalt Alloys Ni-chrome-moly steels