Home / Products / Nickel Alloys / 254 SMO / ASTM A403 254 SMO Butt welding Fittings

We bring froth an impregnable range of Butt weld Fitting to serve the diverse needs of different industries. This high capacity Butt weld Fittings are designed and developed in tandem with international quality standards. We offer these Butt weld Fittings with latest features that are widely appreciated by our huge international client base. We offer these Butt weld Fittings at market leading price range.

ASTM A403 254 SMO Butt welding Fittings

Specifications

Standards	Designation
ASTM	A 403
ASME	SB 403

ASTM A403 254 SMO Butt welding Fittings Inventory Stock at factory rate:-

• 90° Long Radius Elbow
• 90° Short Radius Elbow
• 45° Long Radius Elbow
• 45° Short Radius Elbow
• 180° Long Radius Elbow
• 180° Short Radius Elbow
• 1D Elbow
• 1.5D Elbow
• 3D Elbow
• 5D Elbow
• Seamless Buttwelding 45° and 90° Elbows
• Welded Elbows
• Seamless Buttwelding 180° Returns
• Straight Tees and Crosses
• Reducing Outlet Tees and Reducing Outlet Crosses
• Equal Tee
• Reducing Tee
• Equal Cross
• Reducing Cross
• Reducers
• Concentric Reducer
• Eccentric Reducer
• Stub End
• Lap Joint Stub Ends
• Long Stubend
• Short Stubend
• Pipe Cap
• End Cap
• Collar
• Swedge Nipple
• Pipe Nipples
• Barrel Nipple
• Reducing Nipple
• Bend
• Long Radius Bend
• Piggable Bend
• Lateral

Dimensions

Specifications

Alloy	Common Name	Related Specifications			Tensile Strength	Proof Stress	Elongation
		British	European	United States
Alloy 254	254SMO		1.4547	ASTM A479/A473, /A240 S31254 F44	655 [95]	305 [44.2]	35

Specifications of Alloy 254

Alloy 254 to MLA-MPS-254-BAR ASTM A479 Bar UNS S31254 ASTM A276 Bar UNS S31254 ASTM A182 Forgings UNS S31254 F44 ASTM A240 Plate S31254

Chemical Specification of Alloy 254

Elements	C	Cr	Fe	Mo	Mn	N	Ni	Nb	P	S	Si	V
Minimum		19.5	REMAINDER	6.0		0.18	17.5
Maximum	0.02	20.5		6.5	1.0	0.22	18.5		0.03	0.01	0.8

Basic Properties of Alloy 254- Mechanical Properties

0.2% Proof Stress (N/mm2 )[ksi] minimum	300 [43.5]
Ultimate Tensile Strength (N/mm2) [ksi] minimum	650[94.2]
Elongation (%) minimum	35
Hardness (HBN)	270 max
Reduction of Area(%) minimum	50

Physical Properties of Alloy 254

Density (Kg.m-3)	8000
Magnetic Permeability	<1.05
Young’s Modulus (N/mm2)	200 x 103
Specific Heat 20°C (J.Kg-1.°K-1)	500
Electrical resistance, 20°C (µ.O.m)	0.85
Thermal conductivity, 20°C (W.m-1.°K-1)	13.5

Alloy 254 Features

• High strength compared to 316L and 317L austenitic stainless steels
• Excellent ductility and impact strength at both ambient and sub-zero temperatures
• Non-magnetic
• Higher resistance to abrasion, erosion and cavitation erosion than 316 and 317 stainless
• Listed in MR-01-75 for sour service oilfield applications

Machining Advice of Alloy 254 - Hot worked and precipitation hardened

Operation	Cutting Speed m/min (ft/min)	Feed Rate mm/rev (in/rev)	Depth of cut mm (in)
Milling	18 (58)	0.13-0.25 mm/tooth 0.005-0.010 in/tooth	0.2-3.0 (0.007-0.12)
Drilling 6.4mm(1/4") dia	250rpm	0.075(0.003)
Drilling 12.7mm(1/2") dia	250 rpm	0.125(0.005)
Drilling 25.4mm(1") dia	150 rpm	0.28(0.011)
Turning - Roughing	30 - 45 ( 100 - 150 )	0.4-0.5 (0.015-0.020)	2.5 (0.1)
Turning - Finishing	50 - 60 ( 165 - 200 )	0.13-0.20 (0.005-0.008)	0.5 (0.02)
Tooling	Milling/Turning: Carbide (SANDVIK GC 235, SECO T25M) Drilling: HSS, point angle 118°, chisel angle 120°

Alloy Comparisons

Alloy Comparisons	S20910	S32205	N05500	S31254	FERRALIUM 255-SD50
(0.2% Proof Strength, N/mm2)	420	510	690	325	610
Corrosion Rate (mm.y-1)Seawater	<0.01	<0.01	<0.18	<0.01	<0.01
Corrosion Rate (mm.y-1)10% sulphuric acid at 80°C	0.7	0.4	0.1	<0.15	<0.15
Corrosion Rate (mm.y-1) Boiling 50% nitric acid	0.18	<0.15	0.15	<0.15	<0.15
Wear Properties related to Hardness (HRC)	RC27	RC25	RC20	RC27	RC27

KEY Features of Alloy 254

• Resistant to crevice corrosion in seawater
• Excellent corrosion resistance in seawater and concentrated halide environments
• High resistance to stress corrosion cracking
• Good resistance to erosion corrosion
• Excellent ductility and impact strength at both ambient and sub-zero temperatures
• Low magnetic permeability

Main Export Market

• Eastern Europe
• North America
• Mid East/Africa
• Central/South America
• Asia
• Western Europe
• Australasia
• UAE

Sales Locations

U.A.E,
Oman,
Saudi Arabia,
Qatar,
Bahrain,
Egypt,
Turkey
Singapore,
Thailand,
Malaysia
Indonesia
Poland
Italy
Portugal
Spain
Brazil
Chile
Venezuela
Costa Rica
USA
Canada
Angola
Sri Lanka
Russia