표면 경화 육성 용접용 Stellite의 종류와 특성

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표면 경화 육성 용접용 Stellite의 종류와 특성

 

이하의 내용은 미국 Stellite 사에서 제시하는 표면 경화 육성 용접용 Stellite 합금의 종류와 특성입니다. 흔히 Stellite라고 하면 Co 합금을 생각하는 데, 그렇지 않는 재료도 많이 있습니다. Stelite는 용접재료만 있는 것이 아니며, 분말 상태의 용사재료로 나오는 것도 있고, 아예 환봉 등으로 가공되어 나오는 것도 있습니다.

Standard Cobalt & Nickel base Alloys - Nominal Compositions, wt%

	Co	Cr	C	W	Mo	Ni	Si	B	Fe	Mn	Others
Stellite 1	BAL	33	2.45	13	-	2.5*	1	-	2.5*	1	-
Stellite 3	BAL	31	2.5	13	-	2.5*	1	-	2.5*	1	-
Stellite 4	BAL	31.5	1	14	-	2.0*	1	-	2.0*	1	-
Stellite 6	BAL	28	1.20	5	-	3.0*	1	-	2.5*	1	-
Stellite 12	BAL	29	1.85	9	-	2.5*	1	-	2.5*	1	-
Stellite 20	BAL	33	2.45	17.5	-	2.5*	1	-	2.5*	1	-
Stellite 21	BAL	27	0.25	-	5.5	2.5*	1	-	3.0*	1	-
Stellite 31	BAL	26	0.5	7.5	-	10.5	1	-	2.0*	1	-
Stellite 190	BAL	26	3.30	14	-	1.0	1	-	8.0	0.5	-
Stellite 238	BAL	26	0.1	-	3	-	1	-	20.0	1	-
Stellite 306	BAL	25	0.4	2	-	6.0	1	-	4.0*	1	Nb=5
Stellite 694	BAL	28	1	19	-	5.0	1	-	2.5*	1	V=1
Stellite F	BAL	25.5	1.75	12.25	-	22.5	1	-	1.5*	-	-
Stellite SF1	BAL	19	1.3	13	-	13	3	2.5	3*	0.5	Cu=0.5
Stellite SF6	BAL	19	0.7	7	-	13	2.5	1.7	3*	0.5	Cu=0.5
Stellite SF12	BAL	19	1	9	-	13	3	2	3*	0.5	Cu=0.5
Stellite SF20	BAL	19	1.5	15	-	13	3	3	2*	0.5	Cu=0.5
Tribaloy T400	BAL	8	0.1*	-	28	3*	2.4	-	3*	-	-
Tribaloy T800	BAL	17	0.1*	-	28	3*	3.2	-	3*	-	-
Deloro 15	-	-	0.06*	-	-	BAL	2.0	1.05	1.5*	-	Cu=20
Deloro 22	-	0.70	0.10	-	-	BAL	2.3	1.75	-	-	-
Deloro 40	-	0.70	0.10	-	-	BAL	3.5	2.25	-	-	-
Deloro 50	-	10.25	0.45	-	-	BAL	4.0	1.85	4.0	-	-
Deloro 60	-	14.25	0.6	-	-	BAL	2.0	3.5	4.0	-	-
Deloro 625	-	22	0.1	-	9	BAL	-	-	5	-	-
Nistelle C	-	16.5	0.12*	4.5	17	BAL	0.7	-	6.0	-	-
Trobaloy T700	-	15	0.10*	-	32	BAL	3.25	-	-	-	-

Note : * Indicates maximum permitted.

Mechanical Properties of Surfacing Material and their application

Material	Hardness (HRC)	Ultimate Tensile Strength (Ksi)	Elongation (%)	Others
Cobalt Base Material
Stellite Alloy No. 3	51 ~ 58	80	< 1	High temperature with severe abrasion
Stellite Alloy No. 4	45 ~ 49	136	< 1	Corrosion with erosion on pump parts
Stellite Alloy No. 6	39 ~ 43	121	1	Some wear and corrosion with ductility
Stellite Alloy No. 12	47 ~ 51	100	< 1	Good high temperature with wear resistance
Stellite Alloy No. 19	51 ~ 53	105	< 1	High temperature abrasion
Stellite Alloy No. 21	25 ~ 30	105	9	Best ductility with good corrosion resistance
Stellite Alloy No. 25	< 20	134	5	High temperature nitric acid
Stellite Alloy No. 31	28 ~ 35	107	10	Jet engine parts
Stellite Alloy No. 33	53 ~ 58	55	< 1	High temperature with severe wear and abrasion
Stellite Alloy No. 100	55 ~ 60	60	< 1	High temperature abrasion ? cutting tools
Stellite Alloy No. 250	19 ~ 29	80	8	High temperature oxidation resistance
Stellite Alloy Star J	53 ~ 60	62	< 1	Severe high temperature wear
Stellite Alloy No. 703	51 ~ 58	78	< 1	High temperature with corrosion and severe abrasion
Stellite Alloy No. 706	39 ~ 43	116	1	Some wear and corrosion with ductility
Stellite Alloy No. 712	47 ~ 51	121	< 1	High temperature with wear and corrosion resistance
Stellite Alloy No. 720	53 ~ 60	62	< 1	High temperature corrosion with severe wear & abrasion
Tribaloy T400	51 ~ 58	100	< 1	Good wear and corrosion resistance
Tribaloy T800	50 ~ 58	100	< 1	High temperature with severe wear, abrasion and corrosion
Tribaloy T900	48 ~ 52	100	< 1	Similar to T800 with more ductility
Nickel Base Material
Deloro alloy No. 30	26 ~ 32			Glass industry parts
Deloro alloy No. 40	37 ~ 41	56	1	Glass industry parts
Deloro alloy No. 50	42 ~ 58	77	< 1	Wear and corrosion resistance
Nistelle alloy B-2C	20 ~ 25	90	20	Resistance hot hydrochloric acid
Nistelle alloy C-4C	17 ~ 27	115	20	High temperature and corrosion resistance
Nistelle alloy X	90 HRB			High temperature and corrosion resistance
Tribaloy T700	42 ~ 48		< 1	High temperature wear and corrosion resistance
Tribaloy T745	37 ~ 46	87	< 1	Similar to T700 with better corrosion resistance
Iron Base Material
Delcrome alloy W	47 ~ 50	70	< 1	Wear strips
Delcrome alloy No. 90	51 ~ 55	65	< 1	Severe cold abrasion
Delcrome alloy No. 93	58 ~ 60	60	< 1	Maximum abrasion resistance with some heat
NoCo 02	40 ~ 44	150	8	Nuclear valve trim

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