SMO 254 Buttweld Fittings

Harry Fittings, based in Houston, USA, is a trusted name in the manufacturing and supply of top-notch SMO 254 Buttweld Fittings, specifically crafted for use in highly corrosive and chloride-rich settings. SMO 254 is a high-alloy austenitic stainless steel known for its outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking. Harry Fittings offers a full range of buttweld fittings—including elbows, tees, reducers, and caps—that meet ASME B16.9, ASTM A403, and other international standards. These fittings are commonly found in marine, chemical processing, desalination, and offshore industries, providing durability, excellent weldability, and impressive mechanical performance even in the toughest conditions.

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SMO 254 Buttweld Fittings Specification

Specifications : ASTM A403 / ASME SA403

Dimensions : ASME/ANSI B16.9, ASME B16.28, MSS-SP-43

Size : 3/4″ – 12″

Type : Seamless / Welded / Fabricated

Schedule : Sch 5 TO Sch XXS.

Thickness : 20 Swg., 18 Swg., 16 Swg., 14 Swg., 12 Swg., 10 Swg., & Sch. 10, Sch. 40, Sch. 80 etc.

Monel K500 Forged Fittings from Harry Fittings are primarily made up of nickel (63%) and copper (27–33%), with small amounts of aluminum (0.3–0.8%) and titanium (0.35–0.85%) added for age-hardening. This combination results in impressive tensile strength (~965 MPa) and yield strength (~690 MPa), which are significantly higher than standard Monel 400, while still offering excellent corrosion resistance in seawater, acidic, and alkaline conditions. These fittings hold their strength at temperatures up to 480°C and are resistant to stress-corrosion cracking and pitting. Each fitting is manufactured with precision and rigorously tested for hardness, pressure resistance, and dimensional accuracy.

SMO 254 Buttweld Fittings Chemical Composition

Grade	%	Ni	Cr	Mo	Cu	N	C	Mn	Si	P	S
SMO 254	Min.	17.5	19.5	6	0.5	0.18
SMO 254	Max.	18.5	20.5	6.5	1	0.22	0.02	1	0.8	0.03	0.01

SMO 254 Buttweld Fittings Mechanical Properties

Element	Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
SMO 254	8.0 g/cm3	1320-1390 ℃	650	300	35 %

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Largest SMO 254 Buttweld Fittings Supplier in Houston, USA

Harry Fittings is a leading supplier of SMO 254 Buttweld Fittings in Houston, USA. We offer an extensive range of SMO 254 Buttweld Fittings, renowned for their excellent corrosion resistance and high strength, which makes them perfect for demanding industrial applications like chemical processing, marine environments, and high-temperature systems. With a commitment to quality and reliable delivery, we ensure our clients receive top-tier products tailored to meet the specific needs of various industries.

We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.

If You Are Looking To Buy High Quality

SMO 254 Buttweld Fittings Equivalent Grade

STANDARD	WERKSTOFF NR.	UNS	JIS	SIS	GOST	AFNOR	EN
SMO 254	1.4547	S31254	–	2378	–	Z1 CNDU 20.18.06Az	X1CrNiMoCuN20-18-7

Why Choose SMO 254 Buttweld Fittings from Harry Fittings?

SMO 254 Buttweld Fittingsfrom Harry Fittings offer exceptional corrosion resistance, especially in seawater and harsh environments. They are known for their high strength, durability, and resistance to pitting and crevice corrosion, ensuring long-lasting performance. We provide precise manufacturing, quality control, and reliable service for diverse industrial applications.

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SMO 254 Buttweld Fittings provide excellent resistance to pitting, crack corrosion, and stress corrosion cracking, making them ideal for harsh environments such as chemical, marine and offshore applications. These materials also provide excellent weldability and formability, resulting in reliable and durable connections. SMO 254’s ability to withstand extreme temperature and pressure fluctuations adds great versatility under challenging industrial conditions. Its overall durability and reliability reduce maintenance and replacement costs.

Types of SMO 254 Buttweld Fittings

SMO 254 Buttweld Fittings Dimensions Chart

Nom. Pipe Size	90° Elbows			45° Elbows		180° Return Bends				Tees		Lap Joint Stub Ends			Caps
	Long Rad.	Short Rad.	3R	Long Rad.	3R	Long Rad.		Short Rad.		C	M	F	G	R	E
	A	A	A	B	B	O	K	O	K	C	M	F	G	R	E
½	1.50	–	–	0.62	–	3.00	1.88	–	–	1.00	1.00	3.00	1.38	0.12	1.00
¾	1.50	–	–	0.75	–	3.00	2.00	–	–	1.12	1.12	3.00	1.69	0.12	1.00
1	1.50	1.00	–	0.88	–	3.00	2.19	2.00	1.62	1.50	1.50	4.00	2.00	0.12	1.50
1¼	1.88	1.25	–	1.00	–	3.75	2.75	2.50	2.06	1.88	1.88	4.00	2.50	0.19	1.50
1½	2.25	1.50	–	1.12	–	4.50	3.25	3.00	2.44	2.25	2.25	4.00	2.88	0.25	1.50
2	3.00	2.00	6.00	1.38	2.50	6.00	4.19	4.00	3.19	2.50	2.50	6.00	3.62	0.31	1.50
2½	3.75	2.50	7.50	1.75	3.12	7.50	5.19	5.00	3.94	3.00	3.00	6.00	4.12	0.31	1.50
3	4.50	3.00	9.00	2.00	3.75	9.00	6.25	6.00	4.75	3.38	3.38	6.00	5.00	0.38	2.00
3½	5.25	3.50	10.50	2.25	–	10.50	7.25	7.00	5.50	3.75	3.75	6.00	5.50	0.38	2.50
4	6.00	4.00	12.00	2.50	5.00	12.00	8.25	8.00	6.25	4.12	4.12	6.00	6.19	0.44	2.50
5	7.50	5.00	15.00	3.12	–	15.00	10.31	10.00	7.75	4.88	4.88	8.00	7.31	0.44	3.00
6	9.00	6.00	18.00	3.75	7.44	18.00	12.31	12.00	9.31	5.62	5.62	8.00	8.50	0.50	3.50
8	12.00	8.00	24.00	5.00	9.94	24.00	16.31	16.00	12.31	7.00	7.00	8.00	10.62	0.50	4.00
10	15.00	10.00	30.00	6.25	12.44	30.00	20.38	20.00	15.38	8.50	8.50	10.00	12.75	0.50	5.00
12	18.00	12.00	36.00	7.50	14.88	36.00	24.38	24.00	18.38	10.00	10.00	10.00	15.00	0.50	6.00
14	21.00	14.00	42.00	8.75	17.38	42.00	28.00	28.00	21.00	11.00	11.00	12.00	16.25	0.50	6.50
16	24.00	16.00	48.00	10.00	19.88	48.00	32.00	32.00	24.00	12.00	12.00	12.00	18.50	0.50	7.00
18	27.00	18.00	54.00	11.25	22.38	54.00	36.00	36.00	27.00	13.50	13.50	12.00	21.00	0.5	8.00
20	30.00	20.00	60.00	12.50	24.88	60.00	40.00	40.00	30.00	15.00	15.00	12.00	23.00	0.50	9.00
22	33.00	22.00	66.00	13.50	27.31	66.00	44.00	44.00	33.00	16.50	16.50	12.00	25.25	0.50	10.00
24	36.00	24.00	72.00	15.00	29.81	72.00	48.00	48.00	36.00	17.00	17.00	12.00	27.25	0.50	10.50
26	39.00	–	78.00	16.00	32.31	–	–	–	–	19.50	19.50	–	–	–	10.50
28	42.00	–	84.00	17.25	34.75	–	–	–	–	20.50	20.50	–	–	–	10.50
30	45.00	–	90.00	18.50	37.25	–	–	–	–	22.00	22.00	–	–	–	10.50
32	48.00	–	–	19.75	–	–	–	–	–	23.50	23.50	–	–	–	10.50
34	51.00	–	102.00	21.00	42.25	–	–	–	–	25.00	25.00	–	–	–	10.50
36	54.00	–	108.00	22.25	44.69	–	–	–	–	26.50	26.50	–	–	–	10.50
38	57.00	–	114.00	23.62	47.25	–	–	–	–	28.00	28.00	–	–	–	12.00
40	60.00	–	120.00	24.88	49.75	–	–	–	–	29.50	29.50	–	–	–	12.00
42	63.00	–	126.00	26.00	52.19	–	–	–	–	30.00	28.00	–	–	–	12.00
44	66.00	–	132.00	27.38	54.69	–	–	–	–	32.00	30.00	–	–	–	13.50
46	69.00	–	138.00	28.62	57.19	–	–	–	–	33.50	31.50	–	–	–	13.50
48	72.00	–	144.00	29.88	59.69	–	–	–	–	35.00	33.00	–	–	–	13.50

All dimensions given in inches for common diameters and wall thicknesses. Dimensions in accordance with ASME B16.9. Other sizes, schedules and wall thicknesses also available.

Are Custom Sizes Available for SMO 254 Buttweld Fittings?

Yes, custom sizes for SMO 254 Buttweld Fittings are available at Harry Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@harryfittings.us.

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Application Industry of SMO 254 Buttweld Fittings

Harry Fittings’ Monel K500 Forged Fittings are perfect for marine engineering, offshore platforms, chemical plants, oil & gas refineries, and aerospace applications. Their remarkable resistance to corrosive substances, including seawater, hydrofluoric acid, and alkaline solutions, makes them ideal for valve and pump components, heat exchangers, instrumentation systems, and high-pressure pipelines. These fittings are also highly regarded in the defense and nuclear sectors due to their non-magnetic properties and high strength.