Pressure Vessels

Heat resistant steel that includes Chromium (Cr) and Molybdenum (Mo) is used in order to guarantee strength and toughness in the pressure vessels used in the synthesis of various chemicals in a high temperature, high pressure environment and in power generation etc. The same composition is required in welding materials, and we have developed various such materials to meet the characteristics of each steel material and demand.

Welding Consumables for Pressure Vessels

Steel type	Welding Method	Welding Consumables	ASME/AWS	Polarity	Flux grain size (mesh) diameter(mmø)
1.25Cr-0.5Mo steel ASTM A387 Gr.11 Cl.1 & Cl.2	SAW (Flux/Wire)	PF-200/US-511N	SFA/A 5.23 F8P2-EG-B2	AC	Flux:10×48 3.2, 4.0
	SMAW	CM-A96MB	SFA/A 5.5 E8016-B2	AC	2.6, 3.2 4.0, 5.0
	GTAW	TG-S1CM	SFA/A 5.28 ER80S-G	DCEN	1.2, 1.6 2.0, 2.4
2.25Cr-1Mo steel ASTM A387 Gr.22 Cl.1 & Cl.2	SAW (Flux/Wire)	PF-200/US-521S	SFA/A 5.23 F9P2-EG-B3	AC	Flux:10×48 3.2, 4.0
	SMAW	CM-A106N	SFA/A 5.5 E9016-B3	AC	2.6, 3.2 4.0, 5.0
	GTAW	TG-S2CM	SFA/A 5.28 ER90S-G	DCEN	1.2, 1.6 2.0, 2.4
2.25Cr-1Mo-V steel ASTM A387 Gr_22V	SAW (Flux/Wire)	PF-500/US-521H	SFA/A 5.23 F9P2-EG-G	AC	Flux:10×48 3.2, 4.0
	SMAW	CM-A106H	SFA/A 5.5 E9016-G	AC	3.2, 4.0 5.0
	GTAW	TG-S2CMH	SFA/A 5.28 ER90S-G	DCEN	1.2, 1.6 2.0, 2.4

Example of chemical composition of weld metal(mass%)

Welding consumables	C	Si	Mn	P	S	Cr	Mo	Nb	V
PF-200/US-511N	0.09	0.10	0.74	0.006	0.005	1.43	0.54	―	―
CM-A96MB	0.06	0.51	0.74	0.007	0.003	1.30	0.54	―	―
TG-S1CM	0.06	0.45	0.98	0.007	0.006	1.22	0.54	―	―
PF-200/US-521S	0.11	0.10	0.85	0.006	0.005	2.34	1.04	―	―
CM-A106N	0.11	0.33	0.81	0.005	0.002	2.28	0.98	―	―
TG-S2CM	0.09	0.32	0.71	0.007	0.006	2.26	1.04	―	―
PF-500/US-521H	0.08	0.13	1.16	0.004	0.004	2.53	1.03	0.015	0.35
CM-A106H	0.08	0.31	1.18	0.004	0.002	2.42	1.01	0.017	0.29
TG-S2CMH	0.10	0.14	0.42	0.005	0.006	2.30	1.04	0.034	0.28

Example of mechanical properties of weld metal

Welding consumables	PWHT	0.2%Y.S. MPa	T.S. MPa	El. %	vE J
PF-200/US-511N	690 ℃×4hr	480	605	29	120(-18℃)
CM-A96MB	690 ℃×1hr	490	590	30	180(-18℃)
TG-S1CM	690 ℃×1hr	540	630	28	270(0℃)
PF-200/US-521S	690 ℃×8hr	470	610	27	150(-29℃)
CM-A106N	690 ℃×8hr	510	650	28	125(-40℃)
TG-S2CM	690 ℃×1hr	610	720	28	250(0℃)
PF-500/US-521H	705 ℃×7hr	620	710	26	120(-18℃)
CM-A106H	705 ℃×7hr	610	710	23	150(-18℃)
TG-S2CMH	705℃×7hr	623	718	22	240(-18℃)

Click here for the details of these products.(English only)

Off-shore Structures

Various offshore structures are constructed at underwater oilfields to match the environment and the depth of the development. A strength and toughness suited to the ocean environment is necessary, and a high strength and excellent low temperature toughness are required in the structural steel and welding materials used.

Types of offshore structures and their working water depth

Welding Consumables for Off-shore structures

For Shielded Metal Arc Welding(SMAW)

Tensile strength(MPa)		≧490	≧520	≧550	≧610	≧670	≧770
Yield strength(MPa)		≧350	≧400	≧420	≧500	≧550	≧690
Absorbed energy(J)		≧35	≧40	≧42	≧50	≧55	≧69
Service temperature (℃)	-20	LB-52 (AC/DCEP) [AW/SR] LB-52A (AC/DCEP) [AW/SR] LB-52-18 (AC/DCEP) [AW]	LB-57 (AC/DCEP) [AW/SR※]	LB-62UL (AC/DCEP) [AW/SR] LB-62 (AC/DCEP) [AW/SR] LB-62U (AC/DCEP) [AW/SR]		LB-106 (AC/DCEP) [AW]	LB-116 (AC/DCEP) [AW] LB-80UL (AC) [AW]
	-40	LB-7018-1 (DCEP) [AW] LB-52U (AC/DCEP) [AW/SR※]	NB-1SJ (AC/DCEP) [AW/SR] LB-52NS (AC) [AW]	NB-1SJ (AC) [AW/SR] LB-62L (AC/DCEP) [AW/SR]	LB-62L (AC) [AW/SR] LB-65L (DCEP) [AW/SR] LB-67L (DCEP) [AW/SR]	LB-70L (DCEP) [AW]	LB-88LT (AC) [AW] LB-80L (DCEP) [AW]
	-60	NB-1SJ (AC/DCEP) [AW/SR] LB-52NS (AC/DCEP) [AW/SR]				LB-Y75 (AC) [AW]

※ SR:AC only

For Shielded Metal Arc Welding(SAW)

Tensile strength(MPa)		≧490	≧520	≧550	≧610	≧670	≧770
Yield strength(MPa)		≧350	≧400	≧420	≧500	≧550	≧690
Absorbed energy(J)		≧35	≧40	≧42	≧50	≧55	≧69
Service temperature (℃)	-20		MF-38/US-49A (AC) [AW/SR]		MF-38/ US-40 (AC) [AW]	PF-H80AK/ US-255 (AC) [AW] PF-H80AS/ US-255 (DCEP) [AW]	PF-H80AS/ US-80LT (DCEP) [AW] PF-H80AK/ US-80LT (AC) [AW]
	-40	PF-H55AS/ US-36J (DCEP) [AW/SR] PF-H55LT/ US-36 (DCEP) [AW/SR]	PF-H55S/US-49A (AC) [AW/SR]	PF-H55S/US-49A (AC) [AW/SR] PF-H80AK/US-56B (DCEP) [AW]	PF-H55S/ US-40 (AC) [AW] PF-H80AK/ US-56B (AC/DCEP) [AW]
	-60		PF-H55AS/US-36J (DCEP) [AW] PF-H55LT/US-36 (AC) [AW] PF-H55LT/US-36J (AC) [AW/SR]	PF-H55LT/US-36J (AC) [AW]	PF-H80AK/ US-56B (AC) [AW/SR] PF-H55S/ US-2N (AC) [AW/SR] PF-H62AS/ US-2N (DCEP) [AW]	PF-H80AK/ US-255 (AC) [AW]

For Gas Metal Arc Welding (GMAW) [Polarity:DCEP]

Tensile strength(MPa)		≧490	≧520	≧550	≧610	≧670	≧770
Yield strength(MPa)		≧350	≧400	≧420	≧500	≧550	≧690
Absorbed energy(J)		≧35	≧40	≧42	≧50	≧55	≧69
Service temperature (℃)	-20	DW-50 (100%CO2) [AW] DW-A50 (Ar+20%CO2) [AW] MG-S50 (Ar+20%CO2) [AW/SR]	DW-55L (100%CO2) [AW] MG-T1NS (Ar+20%CO2) [AW] DW-A81Ni1 (Ar+20%CO2) [AW] DW-A62LSR (Ar+20%CO2) [AW/SR]		DW-A65L (Ar+20%CO2) [AW] MG-T1NS (Ar+20%CO2) [AW]	MG-S70 (Ar+20%CO2) [AW]	MG-S80 (Ar+20%CO2) [AW]
	-30	DW-55E (100%CO2) [AW] DW-A55E (Ar+20%CO2) [AW] DW-A55ESR (Ar+20%CO2) [AW/SR]
	-40					DW-67E (CO2) [AW]	DW-A80L (Ar+20%CO2) [AW]
	-50	DW-50LSR (100%CO2) [AW/SR]	DW-55LSR (100%CO2) [AW/SR] DW-A55L (Ar+20%CO2) [AW] DW-A55LSR (Ar+20%CO2) [AW/SR] MG-S50LT (Ar+20%CO2) [AW] MX-A55T (Ar+20%CO2) [AW]	DW-A81Ni1 (Ar+20%CO2) [AW]	DW-62L (100%CO2) [AW] DW-A62L (Ar+20%CO2) [AW] DW-S62L (Ar+20%CO2) [AW] DW-A62LSR (Ar+20%CO2) [AW]	-	MG-S88A (Ar+20%CO2) [AW] MX-A80L (Ar+20%CO2) [AW]
	-60	DW-55L (100%CO2) [AW] DW-A55L (Ar+20%CO2) [AW] MG-S50LT (Ar+20%CO2) [AW/SR] MX-A55T (Ar+20%CO2) [AW]		DW-55LSR (100%CO2) [AW] DW-A55L (Ar+20%CO2) [AW] DW-A55LSR (Ar+20%CO2) [AW] MX-A55T (Ar+20%CO2) [AW]

For Gas tungsten Arc Welding (GTAW) [Polarity:DCEN,Shielding gas:Ar]

Tensile strength(MPa)		≧490	≧520	≧550	≧610	≧670	≧770
Yield strength(MPa)		≧350	≧400	≧420	≧500	≧550	≧690
Absorbed energy(J)		≧35	≧40	≧42	≧50	≧55	≧69
Service temperature (℃)	-20	TG-S50 [AW/SR] TG-S51T [AW/SR]	TG-S62 [AW/SR] TG-S60A [AW/SR]			TG-S80AM [AW/SR]
	-40	TG-S1MT [AW] TG-S1N [AW]	TG-S60A [AW/SR]
	-60

Click here for the details of each product.
KOBELCO WELDING TODAY Special Edition
Click here for our latest technology

LNG Storage Tanks

Liquefied natural gas (LNG) is widely used as a fuel with a low environmental impact. 9% nickel steel, which has good toughness at very low temperatures, is used in the steel tanks that liquefy and store LNG. A ratio of 9% nickel, equivalent to that of steel material, does not satisfy the requirements made of the welding material, for which a material containing almost 70% nickel is used.

Welding Consumables for LNG Storage Tanks

Steel type	Welding Method	Welding Consumables	ASME/AWS	Polarity	Flux grain size(mesh) diameter(mmø)	Example of application section
9%Ni steel JIS G3127 SL9N590 ASTM A533 Type 1	SAW (Flux/Wire)	PF-N4/ US-709S	SFA/A 5.14 ERNiMo-8 (US-709S)	DCEP	Flux:12×65 2.4	Side plate (Horizontal)
	SMAW	Ni-C70S	SFA/A 5.11 ERNiCrFe-9	AC	3.2, 4.0, 5.0	Side plate (Vertical, Horizontal) Bottom plate
		Ni-C1S	SFA/A 5.11 ERNiMo-8			Tack and Repair welding
	GTAW	TG-S709S	SFA/A 5.14 ERNiMo-8	DCEN	1.2, 1.6 2.0, 2.4	Side plate, Bottom plate, Tack and Repair welding, etc.
	FCAW	DW-N709SP	SFA/A 5.34 ENiMo13T1-1,1-4	DCEP	1.2	Roof, Jig, etc Side plate(Vertial), etc,Bottom plate
Mild steel JIS G3106 SM490 ASTM A36	SMAW	LB-52A	SFA/A 5.1 E7016	AC/ DCEP	2.6, 3.2, 4.0 5.0, 6.0	Outer tank
	GTAW	TG-S50	SFA/A 5.18 ER70S-G	DCEP	1.2, 1.6, 2.0 2.4, 3.2	Outer tank
304type stainless steel JIS G4304 SUS304L ASTM A167 Type 304L	SMAW	NC-38LT	SFA/A 5.4 E308L-16	AC/ DCEP	2.6, 3.2, 4.0	Pipe
	GTAW	TG-S308L	SFA/A 5.9 ER308L	DCEP	1.0, 1.2, 1.6 2.0, 2.4, 3.2	Pipe
	FCAW	DW-308LP	SFA/A 5.22 E308LT1-1/4	DCEN	1.2	Pipe

Example of chemical composition of weld metal(mass%)

Welding consumables	C	Si	Mn	P	S	Ni	Cr	Mo	Fe	Nb	W
PF-N4/US-709S	0.02	0.61	0.30	0.002	0.001	67.1	1.8	18.6	8.3	―	2.9
NI-C70S　※	0.09	0.23	2.20	0.003	0.002	65.0	16.5	4.9	9.8	1.2	0.6
NI-C1S　※	0.03	0.49	0.30	0.003	0.002	68.6	1.9	18.6	6.8	―	2.9
TG-S709S	0.02	0.03	0.03	0.002	0.001	70.4	2.0	19.0	5.5	―	3.0
DW-N709SP	0.02	0.21	2.75	0.003	0.002	62.1	6.9	17.6	7.7	―	―
LB-52A　※	0.08	0.57	1.12	0.012	0.005	―	―	―	―	―	―
TG-S50	0.09	0.73	1.35	0.009	0.010	―	―	―	―	―	―
NC-38LT　※	0.03	0.38	2.12	0.022	0.002	10.9	18.4	―	―	―	―
TG-S308L	0.02	0.48	1.98	0.023	0.003	9.7	19.9	―	―	―	―
DW-308LP	0.03	0.71	1.18	0.023	0.009	9.5	20.4	―	―	―	―

Example of mechanical properties of weld metal

Welding consumables	0.2%Y.S. MPa	T.S. MPa	EI. %	vE-196℃ J
PF-N4/US-709S	435	716	48	88
NI-C70S　※	450	710	41	67
NI-C1S　※	440	730	48	83
TG-S709S	460	730	47	160
DW-N709SP	450	710	46	90
LB-52A　※	500	580	31	230(0℃)
TG-S50	480	580	31	180(-30℃)
NC-38LT　※	370	540	51	51
TG-S308L	420	590	45	78
DW-308LP	420	630	40	35

※ AC only

Check TECHNICAL HIGHLIGHTVol.2 & 15 for welding of 9%Ni steel of LNG tanks.
Click here for DW-N609SV, FCAW for fuel tanks on LNG-powered ship.

Ship Building

The majority of goods traded in intercontinental commerce are transported by sea. The ships used in marine transport are impacted by weather conditions and can be exposed to dynamic stress due to high winds and waves. Whilst size is restricted by passages such as the Suez Canal and the Panama Canal, the loading capacity of ships continues to increase and excellent design and materials are employed to provide a strength and toughness that ensures safe shipping. Various high-efficiency construction methods that use the most welding material in proportion to the quantity of steel are employed to reduce the construction period.

Welding Consumables for Shipbuilding

※click numbers for more information

※Click here for the details of each product, automation equipment and welding process. (English Only)

TRIFARC^™ Method(High Speed Triple Tandem One Pool Method)& RF™ Process

Automobile

The development of lightweight, fuel efficient cars and electric vehicles that do not use fossil fuels and the outfitting of an EV infrastructure are progressing. Whilst the usage ratio of steel material is decreasing, a reduction in weight by increased strength and improvement of fatigue strength is being explored.

Welding Consumables for Automobile

Example of typical automobile assembly that the arc welding is applied.

※click automobile parts for more information

Viscosity of molten weld metal

Classification of welding wire for Ar+CO₂ mixed gas by the viscosity of molten weld metal

Surface type	large ← Viscosity → Lower
Cu-coated	MIX-1TS	MIX-50	MIX-50FS
SE(non-Cu)	SE-A1TS	SE-A50	SE-A50FS
Recommned	Galvanized steel, Downhill	General purpose	Flat, horizontal

New concept wires

FAMILIARC^™ MIX-1TR: Solid wire to improve electroposition coating property

・It provides the weld with improved electroposition coating properties with the existing equipment.
・Undercut is not likely to occur at the toe of the welded bead even in the welding of sheets with gaps.
・Bead configuration is not likely to become convex even in highspeed welding.
・Stable welding with little spatter is possible by selecting optimum welding parameters.

Wire	Before electrodeposition coating	After electrodeposition coating
[F] MIX-1TR
Conv.wire （Conventional wire）
Steel sheet: SPGH440 Shielding gas: 80%Ar+bal.CO2 Arc voltage: 24 V Thickness: 2.3 mm Wire feeding speed: 6.7 m/min Travel speed: 800 mm/min

Fig: Bead appearance comparison before and after electrodeposition coating between MIX-1TR and a conventional solid wire

New concept wires that have excellent bead appearance, shape, paint-ability

For more information, click here for Technical Highlight Vol. 12, 28 & 31.
Vol.12: Advanced MAG and MIG Welding Wires : Meeting Car Manufacturing Requirements for Fast and Efficient Welding
Vol.28: Solid wires for thin steel sheets:TRUSTARC^™ MG-S120T for ultra-high tensile strength and,FAMILIARC^™ MG-1T(F) for wire feeding control
Vol.31: FAMILIARC^™ MIX-1TR: the solid wire for GMAW to improve electrodeposition coating property

Bridges

This page has been deleted because the information is out of date

Building Structure

In earthquake-prone Japan, large-scale buildings are constructed using a steel frame in order to minimize human injuries due to collapse of buildings. The manufacture of components such as pillars and beams is carried out continuously through day and night in factories primarily using welding robot systems, whilst assembly welding is performed locally by welding operators.

Example of applications

Welding Consumables for Building Structures

Combination of steel class and welding consumables

Steel1)	Strength class1)	Welding method		JIS classification	Brand name of welding consumable
Carbon steel	400,490MPa	GMAW2)	CO2 semi-auto	Z3312 YGW11	MG-50
			CO2 robot	Z3312 YGW11	MG-50R
			Ar+CO2 robot	Z3312 YGW15	MG-50R
	400,490MPa 520,550MPa		CO2 semi-auto	Z3312 YGW18	MG-56
			CO2 robot		MG-56R(N)
			Ar+CO2 robot	Z3312 YGW19	MIX-55R
	400,490,520MPa	Sub-merged arc (SAW)		Z3313 S502-H	US-36L / PF-I53ES
High tensile steel	570,590MPa	GMAW2)	CO2	Z3312 G59JA1UC3M1T	MG-60
			Ar+CO2	Z3312 G59JA1UMCM1T	MG-S63B
		Sub-merged arc (SAW)		Z3313 S502-H	US-49 / PF-I55ES
	690MPa	GMAW2)	CO2	Z3312 G69A2UCN2M4T	MG-70
	780MPa		CO2	Z3312 G78A2UCN4M4T	MG-80
Fire -resistant steel	400MPa	GMAW2)	CO2	Z3312 G43A0UC11	MG-400FR
	400,490,520MPa	GMAW2)	CO2	Z3312 G49A0UC3M1T	MG-490FR
		Sub-merged arc (SAW)		Z3183 S502-H	US-400LFR / PF-I53ES

※2):Solid wire (Flux-cored wires is prepared elsewhere,too)

Example of steel for building structure

Kind, class	JIS and the sign name of steel of the object
400MPa	SN400,SM400,SS400,STKN400,STKR400 BCP235,BCR295
490MPa	SN490,SM490,TMC325,STKN490,STKR490 BCP325,BCP325T
520MPa	SM520,TMC355
550MPa	TMC385
570MPa	SM570
590MPa	SA440
Fire-resistant	SM400-FR,SM490-FR,SM520-FR

Solid wires suitable for building structure welding robots

Click here for the details of these products.(English only)
Visit our YouTube Channel for ARCMAN^™ welding robot system.