Böhler diamondspark X70 RC-Pipe E91T1-K2M Pipeline Wire

Seamless rutile NiMn wire for automatic pipeline welding of X70 and X80

The Böhler diamondspark X70 RC-Pipe is a seamless rutile, nickel-manganese alloyed flux-cored wire for single or multipass welding of carbon, carbon-manganese and high-strength steels with Ar-CO2 shielding gas. Böhler Welding classifies it AWS A5.29 E91T1-K2M-JH4 and EN ISO 18276-A T 55 5 Mn1.5Ni P M21 1 H5. The data sheet lists excellent all-position weldability, very low spatter, fast-freezing and easy-to-remove slag, and exceptional mechanical properties at low temperature combined with low diffusible hydrogen, which it names as the reason the wire is particularly suited to pipeline applications. The sheet headline describes it as flux-cored wire for automatic pipeline welding.

Technical specifications

Parameter	Specification
AWS A5.29 classification	E91T1-K2M-JH4
AWS A5.36	E91T1-M21A6-K2-H4
EN ISO 18276-A	T 55 5 Mn1.5Ni P M21 1 H5
EN ISO 18276-B	T 62 5 T1-1M21A-N3M1-UH5
Typical analysis, M21, wt %	C 0.06; Si 0.40; Mn 1.45; Ni 1.45
Yield strength, as welded	91 ksi typical (minimum 80)
Tensile strength, as welded	102 ksi typical (93 to 110)
Elongation A (L0=5d0)	22 % typical (minimum 18)
Impact energy, as welded	52 ft-lbf at -40 °F; 44 ft-lbf at -60 °F (minimum 35)
Shielding gas	M21: Ar plus 15 to 25 % CO2
Diameter	0.045 in
Power source	Standard GMAW power sources
Base materials	API 5L X70 and X80; EN 3183 L485 and L555
Approvals	TÜV (19765), CE

Pairing in pipeline work

The data sheet limits the base metals to API 5L X70 and X80 and EN 3183 L485 and L555, with a single 0.045 in diameter, so this is a specialised pipeline wire rather than a general fabrication wire. In manual pipeline work the same strength levels are welded with vertical-down basic electrodes such as the

FOX BVD 90.

after a cellulosic or basic root, while for mechanised welding the wire gives the operator all-position capability with very low spatter. The weld procedure for the pipeline, including preheat, heat input and hydrogen control, decides whether this wire passes the project toughness and CTOD requirements.

Related Böhler Welding cored wire	Classification	Typical use
FOXcore 71 RC	AWS A5.20 E71T-1 family	All-position rutile wire for mild steel, 0.045 to 1/16 in.
diamondspark 52 RC	AWS A5.20 E71T1 family, seamless	Seamless rutile wire for shipbuilding and structural steel
diamondspark 54 MC	AWS A5.18 E70C-6M H4	Seamless metal-cored wire, root passes and automation

Handling and what to confirm

Give the pipe grade, wall thickness, wire diameter (0.045 in is the only size on the data sheet), the shielding gas, the spool format required by the welding head or wire feeder, and the test requirements. If your project specification requires sour-service testing, the data sheet for this wire does not state it, so ask for confirmation in writing before ordering.

Documents and quotation

The Böhler Welding data sheet for diamondspark X70 RC-Pipe is attached to this page and carries the classifications, analysis, mechanical values and operating data quoted above. Related items are listed under flux-cored welding wire. A quotation needs diameter, pack type, quantity, base material and certificate type.