Alloy 2507

ALLOY TYPE	Alloy
ALLOY NAME	Alloy 2507

Alloy 2507 Bar stock sizes available
Diameter (in)	Diameter (mm)	Kg per m
1	25.4	3.97
1¼	31.75	6.17
1½	38.1	8.89
1¾	44.45	12.1
2	50.8	15.84
2¼	57.15	20.04
2½	63.5	24.73
2¾	69.85	29.91
3	76.2	35.62
3¼	82.55	41.79
3½	88.9	48.48
3¾	95.25	55.63
4	101.6	63.3
4½	114.3	80.13
5	127	98.92
5½	139.7	119.69
6	152.4	142.45
7	177.8	193.88
8	203.2	253.22
9	228.6	320.46
10	254	395.63
12	304.8	569.7
14	355.6	775.46

Specifications

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	Alloy 2507 to MLA-MPS-47V-BAR/FORG

	ASTM A473 UNS S32750 Forgings

	ASTM A182 Grade F53 UNS S32750 Forged Flanges

	ASTM A240 UNS S32750 Sheet and Plate

	ASTM A479 UNS S32750 Bar

	NACE MR 01-75

	EN 10088-3 1.4410

Downloads
Purchase Specifications >
Alloy 2507 Bar and Forgings Purchase Specification

Alloy Features

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Applications

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Chemical Process Industry:

Nitric Acid Processes, Polypropylene Production, PVC Production, Dioxide, 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

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:

Sewage Treatment

Forms Available	Back to Top

Chemical Specification

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Physical Properties

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Basic Properties - Mechanical Properties

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Machining Advice (hot worked and precipitation hardened alloy)

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KEY Features of the Alloy

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Alloy Comparisons

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Disclaimer
Data in this publication 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


	Excellent corrosion resistance in a wide variety of corrosive chemicals

	Outstanding resistance to pitting and crevice corrosion in seawater and other chloride containing environments, with Critical Pitting Temperature exceeding 50°C

	High strength compared to austenitic and 22%Cr duplex stainless steels

	Excellent ductility and impact strength at both ambient and sub-zero temperatures

	High resistance to abrasion, erosion and cavitation erosion

	Excellent resistance to stress corrosion cracking in chloride containing environments

	Listed in NACE MR 01 75 for sour service

	ASME Approval for Pressure Vessel application

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

Elements	C	Cr	Cu	Fe	Mo	Mn	N	Ni	P	S	Si	W
Minimum		24.0		REMAINDER	3.00		0.24	6.00			0.20	0.50
Maximum	0.030	26	0.50		5.00	1.20	0.32	8.00	0.035	0.020	0.80	1.00

Density (Kg.m^-1)	7810
Magnetic Permeability	33
Young’s Modulus (N/mm²)	199 x 10³
Specific Heat, 20°C (J.Kg^-1.°K^-1)	475
Fracture Toughness, Kq (MPa.m)	475
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

0.2% Proof Stress (N/mm² ) [ksi] minimum	550[79.8]
Ultimate Tensile Strength (N/mm²) [ksi] minimum	800 [116]
Elongation (%) minimum	25
Hardness (HBN)	270 max
Reduction of Cross Section Area (%)	45
Charpy V-notch Impact at ambient Temp (J) [ft.lb]	80min [59min]
Charpy V-notch Impact at -46°C (J) [ft.lb]	45av, 35min [33av, 25.8min]

ASTM G48A Corrosion test at 40°C	No pitting and weight loss <4.0g/m²
Ultrasonic Testing	According to ASTM A388
Ferrite Content	35%-55%
Microstructure	Microstructure certified free from grain boundary carbides, sigma, chi and laves phases

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	S31803	S17400 (17-4PH)	718 ( ST )	S31254	Alloy 2507
0.2% Proof Strength (N/mm²), minimum	450	1070	550	300	550
Corrosion Rate (mm.y^-1) Seawater	<0.01	~1	<0.01	<0.01	<0.01
Corrosion Rate (mm.y^-1) 10% sulphuric acid at 80°C	<0.4	10	>1	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)	RC25	RC38	RC20	RC20	RC28