Section C - High temperature alloys

	Consumables for elevated temperature service
The 300H consumables are designed for welding matching high carbon stainless steels typically used at service temperatures of 400-800°C. To ensure optimum performance under these service conditions not only is the carbon controlled (normally 0.04-0.08%C) but the ferrite and total alloying are also carefully regulated to minimize the formation of brittle intermetallic phases.
The 309 consumables in this section should not be confused with the 309L/309Mo types used for dissimilar welding (B-50 and B-51). The 309 consumables in Section C generally have controlled carbon and ferrite and are designed for matching base materials for elevated temperature service.
Consumables in the 330, 800 and HP40 alloy sections are designed to match a wide range of special austenitic alloys which are used primarily for resistance to creep and hot corrosion or oxidation. In all types, the presence of a controlled level of carbon is essential for hot strength. Parent alloys with 0.4% carbon or more are produced predominantly in cast form and have quite low room temperature ductility, but in general this does not have an adverse effect on weldability.

Data Sheet	Alloy	Process	Product	Specifications
				AWS	BS EN / BS EN ISO

300H stainless steel consumables for elevated temperature service
C-10	308H	MMA	Ultramet 308H	E308H-16	E 19 9 H R
			Ultramet B308H	E308H-15	E 19 9 H B
		TIG/MIG/SAW	308S96	ER308H	19 9 H
		FCW	Supercore 308H	E308HT0-1/4	--
			Supercore 308HP	E308HT1-1/4	--
C-11	347H	MMA	Ultramet 347H	E347-16	E 19 9 Nb R
			Ultramet B347H	E347-15	E 19 9 Nb B
		TIG/SAW	ER347H	ER347	19 9 Nb
		FCW	Supercore 347HP	E347T1-1/4	T 19 9 Nb P M 2
C-12	16.8.2	MMA	Supermet 16.8.2	E16.8.2-17	--
			E16.8.2-15	E16.8.2-15	--
		TIG	ER16.8.2	ER16.8.2	W 16 8 2
		SAW	ER16.8.2	ER16.8.2	S 16 8 2
		FCW	Supercore 16.8.2	--	--
			Supercore 16.8.2P	--	--
C-13	316H	MMA	17.8.2.RCF	--	BS: 17.8.2.R
			Ultramet 316H	E316H-16	E 19 12 2 R 32
		TIG/MIG/SAW	316S96	ER316H	19 12 3 H

Esso Refinery, Fawley, Southampton

Data Sheet	Alloy	Process	Product	Specifications
				AWS	BS EN / BS EN ISO

High temperature 309 alloys
C-20	253MA	MMA	Supermet 253MA	--	--
C-21	309	MMA	Thermet 309CF	E309H-16	(E 22 12 R)
		TIG/MIG	309S94	ER309	23 12 H

310 stainless steels for high temperature service
C-30	310	MMA	25.20 Super R	(E310-16)	E 25 20 R
			Ultramet B310Mn	(E310-15)	E 25 20 B
		TIG/MIG/SAW	310S94	ER310	25 20
C-31	310H	MMA	Thermet 310H	E310H-15	E 25 20 H B

Consumables for alloys 330 and 800
C-40	800	MMA	Thermet 800Nb	--	--
		TIG/MIG	21.33.Mn.Nb	--	--
C-41	330	MMA	Thermet R17.38H	(E330H-16)	BS: 15.35.H.R
C-45	25.35.Nb	MMA	Thermet 25.35.Nb	--	--

Consumables for HP40 and other high carbon cast alloys
C-50	HP40Nb	MMA	Thermet HP40Nb	--	BS: 25.35.H.Nb.B
		TIG/MIG	25.35.4C.Nb	--	--
C-60	35.45	MMA	Thermet 35.45.Nb	--	--
		TIG/MIG	35.45.Nb	--	--
C-70	HP50	MMA	Thermet HP50WCo	--	--
C-80	22H	MMA	Thermet 22H	--	--
C-90	657	MMA	Nimrod 657	--	--