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Home / Products / Nickel Alloys / 254 SMO / ASTM A240 254 SMO Plates

Contents

1 ASTM A240 254 SMO Plates Specification
2 ASTM A240 254 SMO Plates Dimensions
3 ASTM A240 254 SMO Plates Godown
4 ASTM A240 254 SMO Plates Marking & Packaging
5 ASTM A240 254 SMO Plates Shipping Policy
6 Why choose us for ASTM A240 254 SMO Plates
7 Best Offer ever on ASTM A240 254 SMO Plates
8 ASTM A240 254 SMO Plates Price (at Factory Price)
9 ASTM A240 254 SMO Plates Uses & Application

254 SMO (UNS S31254)

ASTM A240 254 SMO Plates

Specifications

Standards	Designation
ASTM	A 240
ASME	SB 240

ASTM A240 254 SMO Plates Inventory Stock at factory rate:-

Sizes	Availability
0.4mm
0.5mm
0.8mm
1mm
1.2mm
1.6mm
2mm
3mm
4mm
5mm
6mm
8mm
10mm
12mm
16mm
20mm
25mm

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

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

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

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