LANGALLOY® K-500

 

ALLOY TYPE LANGALLOY®
ALLOY NAME LANGALLOY® K - 500

Stock Sizes
 
Basic Properties - Mechanical Properties

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



Alloy Features Back to Top
   
Nickel Alloys Monel K500 Inconel 718 Monel 400 Inconel 625 Langalloy K-500 Langalloy 400 Alloy 718 Alloy 625 High strength and hardness
   
Nickel Alloys Monel K500 Inconel 718 Monel 400 Inconel 625 Langalloy K-500 Langalloy 400 Alloy 718 Alloy 625 Excellent corrosion resistance
   
Nickel Alloys Monel K500 Inconel 718 Monel 400 Inconel 625 Langalloy K-500 Langalloy 400 Alloy 718 Alloy 625 Resistant to chloride stress corrosion
   
Nickel Alloys Monel K500 Inconel 718 Monel 400 Inconel 625 Langalloy K-500 Langalloy 400 Alloy 718 Alloy 625 Good resistance to impingement attack
   
Nickel Alloys Monel K500 Inconel 718 Monel 400 Inconel 625 Langalloy K-500 Langalloy 400 Alloy 718 Alloy 625 High fatigue strength in seawater
   
Nickel Alloys Monel K500 Inconel 718 Monel 400 Inconel 625 Langalloy K-500 Langalloy 400 Alloy 718 Alloy 625 Low magnetic permeability


Chemical Specification Back to Top
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



Physical Properties Back to Top
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 (?Ω.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



Specifications Back to Top
   
Nickel Alloys Monel K500 Inconel 718 Monel 400 Inconel 625 Langalloy K-500 Langalloy 400 Alloy 718 Alloy 625 BS 3076 NA18
   
Nickel Alloys Monel K500 Inconel 718 Monel 400 Inconel 625 Langalloy K-500 Langalloy 400 Alloy 718 Alloy 625 ASTM B865 N05500
QQ-N-286

 

Applications Back to Top
 
Chemical Process Industry:
Processes involving organic acids, caustic soda and dry chlorine. Production of chlorinated plastics.
Applications include doctor blades and scrapers.
 
Marine Industry and Shipbuilding:
Propellers and Shafts, Fasteners, Gyroscopes
 
Oil and Gas Industry:
Pump shafts, Valve stems, Drill collars

 

 

Machining Advice (hot worked and precipitation hardened alloy) Back to Top

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



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