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FERRALIUM™ 255-3SF

FERRALIUM™ 255-3SF

Alloy	Common Name	Related Specifications			Tensile Strength	Proof Stress	Elongation
Alloy	Common Name	British	European	United States	Tensile Strength	Proof Stress	Elongation
FERRALIUM 255-3SF	Alloy 255		1.4507	ASTM A479/ A473, A182 UNS S32550, F61	760 [110.3]	550 [79.9]	25

FERRALIUM™ 255-3SF

FERRALIUM 255-3SF Bar stock sizes available
Diameter (in)	Diameter (mm)	kg per m
1/2	12.7	0.98
3/8	15.88	1.54
3/4	19.05	2.23
7/8	22.23	3.02
1	25.4	3.97
1 1/8	28.58	5.02
1 1/4	31.75	6.17
1 3/8	35.05	7.54
1 1/2	38.10	8.89
1 3/8	41.40	10.53
1 3/4	44.45	12.10
1 7/8	47.75	13.97
2	50.80	15.84
2 1/4	57.15	20.04
2 1/2	63.50	24.73
2 3/4	69.85	29.91
3	76.20	35.62
3 1/4	82.55	41.79
3 1/2	88.90	48.48
3 3/4	95.25	55.63
4	101.60	63.30
4 1/4	107.60	71.47
4 1/2	114.30	80.13
4 3/4	120.65	89.28
5	127.00	98.92
5 1/4	133.35	108.90
5 1/2	139.70	119.69
6	152.40	142.45
6 1/2	165.10	167.18
6 3/4	171.45	180.40
7	177.80	193.88
7 1/2	190.05	221.40
8	203.20	253.22
9	228.60	320.46
10	254.00	395.63
12	304.80	569.70
14	355.60	775.46

Specifications of Ferralium 255-3SF

FERRALIUM to MSA-MPS-3SF-FORGINGS
EN 10088-1 1.4507
ASTM A473 UNS S32550 Forgings
ASTM A790 UNS S32550 Seamless and Welded Pipe
ASTM A815 UNS S32550 Pipe Fittings
A789 UNS S32550 Seamless & Welded Tubing
Stamicarbon 18005 MS47 UNS S32550
X2 CrNiMoCuN 25.6.3
Z3 CNDU 25-07AZ
ASME Approval as Table UHA 23 and Code Case 1883
NACE MR 01-75

Downloads
Purchase Specifications >
FERRALIUM 255-3SF Forgings Purchase Specification

Past Papers >
The Influence of Copper on the Pitting Corrosion of Duplex Stainless Steels UNS S32550 L F Garfias-Mesias J M Sykes and C D S Tuck Corrosion Vol 54 No 1 1998 p 40

Technical Data Sheets >
Machining FERRALIUM 255 Welding FERRALIUM 255

Chemical Specification of Ferralium 255-3SF

Basic Properties of Ferralium 255-3SF - Mechanical Properties

Physical Properties of Ferralium 255-3SF

Applications of Ferralium 255-3SF

Chemical Process Industry:

Sulphuric Acid Production, Nitric Acid Processes, Polypropylene Production, PVC ProductionTitanium Dioxide Production, Caustic Evaporators, Equipment Handling Organic and Fatty Acids

Marine Industry and Shipbuilding:

Propellers and Shafts, Rudders, Shaft Seals, Pumps, Bolts and Fasteners, Valves, Instrumentation, Oil and Chemical Tankers

Oil and Gas Industry:

Pumps, Valves, Pipe, Vessels, Wellhead Equipment, Subsea Equipment

Pollution Control:

Fans and pumps, Wet Scrubbers, Incinerators

Copper Smelting:

ID Fans, Tuyere bars, Wet Scrubbers, Leaching Area Precipitators

Pulp and Paper Industry:

Black liquor heater tubes, Digester Blow Valves, Rotary Feed Valves, I.D.Fans, Brownstock Washers, Precipitators, Bleaching Components

Food Industry:

Sugar Cane Centrifuges, Corn and Vegetable processing plant

Agrochemicals:

Fertiliser Production (Wet phosphoric acid)

Civil Engineering:

Statue of Liberty supporting structure, Swimming Pools, Sewage Treatment

Ferralium 255-3SF Features

Forms of Ferralium 255-3SF Available

Machining Advice of Ferralium 255-3SF -

Alloy Comparisons

Disclaimer
Data in this Ferralium 255-3SF page is provided solely for the purposes of distribution of information. Langley Alloys cannot make guarantees with respect to subject matter or accuracy of this information. Langley Alloys specifically disclaims all guarantees, expressed, implied or otherwise, including without limitation, all warranties of merchantability and fitness for a particular purpose. This publication may include technical inaccuracies or typographical errors. If errors are found, please make a notification via e-mail to: info@langleyalloys.com

Elements	C	Cr	Cu	Fe	Mo	Mn	N	Ni	P	S	Si
Minimum		24.0	1.50	REMAINDER	2.9		0.110	4.50
Maximum	0.04	27.0	2.00		3.9	1.50	0.25	6.50	0.04	0.03	1.00

0.2% Proof Stress (N/mm² ) [ksi] minimum	550 [79.8]
Ultimate Tensile Strength (N/mm²) [ksi] minimum	760 [110.3]
Elongation (%) minimum	25
Hardness (HBN)	270max
Charpy V-notch Impact at ambient Temp (J) [ft.lb]	80min [59min]

Additional Testing
Ultrasonic Testing	According to ASTM A388
Liquid Penetrant Inspection	According to ASTM E165
Other tests	If required, are agreed with customer prior to contract

Density (Kg.m^-1)	78.1
Magnetic Permeability	33
Young’s Modulus (N/mm²)	199 x 10³
Specific Heat, 20°C (J.Kg^-1.°K^-1)	475
Fracture Toughness, K_Q (MPa.m^½)	98
Specific Electrical Resistance, 20°C (µO.m)	0.80
Thermal conductivity, 20°C (W.m^-1.°K^-1)	14.2
Mean coefficient of thermal expansion, 20-100°C (°K^-1)	11.1 x 10^-6

Alloys	Bars & Sections	Hot & Cold Rolled Plate	Ingot & Billet	Forged Products	Sand Castings
FERRALIUM 255-SD50
FERRALIUM 255-SD40
FERRALIUM 255-3SF
FERRALIUM 255-3AF
FERRALIUM 255-3SC
FERRALIUM 255-FG46
ALLOY 2507
ALLOY S32760

Operation	Cutting Speed m/min (ft/min)	Feed Rate mm/rev (in/rev)	Depth of cut mm (in)
Milling	40 (130)	0.05-0.13 mm/tooth 0.02-0.005 in/tooth	0.5-6.0 (0.02-0.25)
Drilling – 6.4mm (1/4”) dia	250rpm	0.075 (0.003)
Drilling – 12.7mm (1/2”) dia	250rpm	0.125 (0.005)
Drilling – 25.4mm (1”) dia	150rpm	0.28 (0.011)
Turning - Roughing	30-45 (100-150)	0.20 – 0.38 (0.008-0.015)	3 (0.125)
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	S17400 (17- 4PH)	S31803	718 (ST)	S31254	FERRALIUM 255-3SF
0.2% Proof Strength (N/mm²), minimum	1070	450	550 max	300	550
Corrosion Rate (mm.y^-1) Seawater	~1	<0.01	<0.01	<0.01	<0.01
Corrosion Rate (mm.y^-1) 10% sulphuric acid at 80°C	10	0.4	<0.15	1.5	<0.15
Corrosion Rate (mm.y^-1) Boiling 50% nitric acid	<0.15	<0.15	<0.15	0.4	<0.15
Wear Properties related to Hardness (HBN)	RC38	RC25	RC20	RC20	RC28