ASTM A403 254 SMO Coupolet Manufacturer, Exporter & Supplier

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Contents

1 ASTM A403 254 SMO Coupolet Specification
2 ASTM A403 254 SMO Coupolet Dimensions
3 ASTM A403 254 SMO Coupolet Godown
4 ASTM A403 254 SMO Coupolet Marking & Packaging
5 ASTM A403 254 SMO Coupolet Shipping Policy
6 Why choose us for ASTM A403 254 SMO Coupolet
7 Best Offer ever on ASTM A403 254 SMO Coupolet
8 ASTM A403 254 SMO Coupolet Price (at Factory Price)
9 ASTM A403 254 SMO Coupolet Uses & Application

254 SMO (UNS S31254)

Hexion Steel & Engineering Corp is well recognized and experienced supplier & export of exclusive collection of 254 SMO Coupolet. Our bars are produced with high grade raw materials to enhance the capacity of the product immensely. This 254 SMO Coupolet is very useful and have rust-free and well structured. These 254 SMO Coupolet are highly acknowledged in Chinan and overseas market for its features such as corrosion resistance, precisely designed & constructed, excellent in quality and better efficiency.

ASTM A403 254 SMO Coupolet

Specifications

Standards	Designation
ASTM	A 403
ASME	SB 403

ASTM A403 254 SMO Coupolet Inventory Stock at factory rate:-

Dimensions

Specifications

Alloy	Common Name	Related Specifications			Tensile Strength	Proof Stress	Elongation
Alloy	Common Name	British	European	United States	Tensile Strength	Proof Stress	Elongation
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