Monel K-500

Monel K500, NA18, 2.4375, N05500

MONEL K500 (NA18, 2.4375) is a precipitation-hardenable nickel-copper alloy that combines high strength, corrosion resistance and non magnetic properties.

A thoroughly modern alloy, MONEL K500 (N05500), is a high performance alloy that benefits greatly from double melting through the Electro Slag Refining (ESR) process, this ensures the cleanest and highest quality of material is supplied. ESR processing improves alloy purity and is required for this alloy to remove non metallic inclusions that can form HARD spots in the material when the alloy is aged, Inclusions in materials can result in inconsistent material properties, increased machining difficulty and processing times and ultimately part failures.

Although we supply MONEL K500 (NA18) in all conditions we predominantly supply material in the Hot Worked and Aged condition, which offers the optimum combination of high strength and ductility across the size range, all our material is manufactured to meet the most demanding of the Offshore and Energy Industry customer requirements.

Alloy	Common Name	Related Specifications			Tensile Strength	Proof Stress	Elongation
Alloy	Common Name	British	European	United States	Tensile Strength	Proof Stress	Elongation
LANGALLOY K-500	MONEL K-500	BS 3076 NA18	2.4375	ASTM B865 N05500, QQ-N-286, AMS 4676	965 [140]	690 [100]	20

LANGALLOY^® K-500 (NA18, 2.4375) Technical Information

MONEL K-500 Bar stock sizes available
Diameter (in)	Diameter (mm)	kg per m
1/2	12.70	1.07
5/8	15.88	1.67
3/4	19.05	2.41
7/8	22.23	3.27
1	25.40	4.28
1 1/4	31.75	6.68
1 1/2	38.10	9.62
1 3/4	44.45	13.10
2	50.80	17.11
2 1/4	57.15	21.65
2 1/2	63.50	26.73
2 3/4	69.85	32.34
3	76.20	38.49
3 1/4	82.55	45.17
3 1/2	88.90	52.39
3 3/4	95.25	60.14
4	101.60	68.43
4 1/2	114.30	86.60
5	127.00	106.92
5 1/4	133.35	117.87
5 1/2	139.70	129.37
6	152.40	153.96
6 1/2	165.10	180.69
7	177.80	209.55
8	203.20	273.70
10	254.00	427.66

Specifications of Monel K-500

BS 3076 NA18
ASTM B865 N05500
QQ-N-286

Downloads
Purchase Specifications >
LANGALLOY K500 Bar & Forgings Purchase Specification

Chemical Specification of Monel K-500

Mechanical Properties of Monel K-500

Cold Worked and Precipitation Treated
Section size up to and including 25mm:
0.2% Proof Stress (N/mm2)[ksi] minimum	760 [110.2]
Ultimate Tensile Strength (N/mm2)[ksi] minimum	1000 [145]
Elongation (%) minimum	14

Section size 25mm – 55mm:
0.2% Proof Stress (N/mm2)[ksi] minimum	690 [100]
Ultimate Tensile Strength (N/mm2)[ksi] minimum	970 [140.6]
Elongation (%) minimum	16

Cold Worked, Solution Treated and Precipitation Treated
Section size up to and including 25mm:
0.2% Proof Stress (N/mm2)[ksi] minimum	620 [89.9]
Ultimate Tensile Strength (N/mm2)[ksi] minimum	900 [130.5]
Elongation (%) minimum	20
0.2% Proof Stress (N/mm2)[ksi] minimum	550 [79.8]
Ultimate Tensile Strength (N/mm2)[ksi] minimum	830 [120]
Elongation (%) minimum	20
Hardness HB	250

Hot Worked and Precipitation Treated
Section size up to and including 110mm:
0.2% Proof Stress (N/mm2)[ksi] minimum	620 [89.9]
Ultimate Tensile Strength (N/mm2)[ksi] minimum	900 [130.5]
Elongation (%) minimum	20
Hardness, HB	250
Section size 110mm – 300mm:
0.2% Proof Stress (N/mm2)[ksi] minimum	585 [84.8]
Ultimate Tensile Strength (N/mm2)[ksi] minimum	900 [130.5]
Elongation (%) minimum	20
Hardness, HB	250

Hot Worked, Solution Treated and Precipitation Treated
Section size up to and including 25mm:
0.2% Proof Stress (N/mm2)[ksi] minimum	500 [72.5]
Ultimate Tensile Strength (N/mm2)[ksi] minimum	830 [120.3]
Elongation (%) minimum	15
Hardness, HB	250

Section size 25mm up to and including 110mm:
0.2% Proof Stress (N/mm2)[ksi] minimum	585 [84.8]
Ultimate Tensile Strength (N/mm2)[ksi] minimum	900 [130.5]
Elongation (%) minimum	20
Hardness, HB	250
Section size 110mm up to and including 300mm:
0.2% Proof Stress (N/mm2)[ksi] minimum	500 [72.5]
Ultimate Tensile Strength (N/mm2)[ksi] minimum	830 [120.3]
Elongation (%) minimum	15
Hardness, HB	250

Physical Properties of Monel K-500

Applications of Monel K-500

Monel K-500 Features

Forms of Monel K-500 Available

Machining Advice of Monel K-500

Alloy Comparisons

Disclaimer
Data in this Monel K-500 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	Al	C	Cu	Fe	Mn	Ni	S	Si	Ti
Minimum	2.30		27.0			63.0			0.35
Maximum	3.15	0.18	33.0	2.0	1.5		0.010	0.050	0.85

Density (Kg.m-1)	84.3
Magnetic Permeability (20°C)	<1.005
Curie Temperature (°C)	-90
Young’s Modulus (N/mm2)	179 x 103
Specific Heat, 20°C (J.Kg-1.°K-1)	418
Specific Electrical Resistance, 20°C (?O.m)	0.62
Thermal conductivity,20°C (W.m-1.°K-1)	17.5
Mean coefficient of thermal expansion, 20-100°C (°K-1)	13.4 x 10-6

Alloys	Bars & Sections	Hot & Cold Rolled Plate	Ingot & Billet	Forged Products	Sand Castings
LANGALLOY K-500
LANGALLOY 400
LANGALLOY 718
LANGALLOY 625

Operation	Cutting Speed m/min (ft/min)	Feed Rate mm/rev (in/rev)	Depth of cut mm (in)
Milling	10 (32)	0.08-0.15 mm/tooth 0.003-0.006 in/tooth	0.2-3.0 (0.007-0.12)
Drilling – 6.4mm (1/4”) dia	6-8 (19-25)	0.08 (0.003)
Drilling – 12.7mm (1/2”) dia	6-8 (19-25)	0.13 (0.005)
Drilling – 25.4mm (1”) dia	6-8 (19-25)	0.20 (0.008)
Turning - Roughing	18-24 (60-75)	0.25 – 0.40 (0.010-0.020)	2.5 (0.1)
Turning - Finishing	31-38 (100-120)	0.10 – 0.20 (0.004-0.008)	0.25 (0.01)
Tooling	Milling/Turning: Carbide (SANDVIK GC 235, SECO T25M) , point angle 118°, chisel angle 120°Drilling: HSS

Alloy Comparisons	N04400	S31803	718 (Aged)	N05500	FERRALIUM 255-SD50
0.2% Proof Strength (N/mm²), minimum	170	450	827	690	600
Corrosion Rate (mm.y^-1) Seawater	0.25	<0.01	<0.01	0.18	<0.01
Corrosion Rate (mm.y^-1) 10% sulphuric acid at 80°C	0.06	0.4	<0.15	0.1	<0.15
Corrosion Rate (mm.y^-1) Boiling 50% nitric acid	1.1	>5	>1.5	<2	>5

Monel K-500

Monel K500, NA18, 2.4375, N05500

LANGALLOY® K-500 (NA18, 2.4375) Technical Information

LANGALLOY^® K-500 (NA18, 2.4375) Technical Information