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SAE 4140 Alloy Round Bar

We are leading company in the field of manufacturing export quality SAE 4140 Alloy Round Bar. These Round Bar are made of using Finest Nickel Alloys. These SAE 4140 Alloy Round Bar are essentially used as a Connector between the pipes at the middle. They are also used as a plug in to resist pressure in Pressure Valves. These have huge demand in many large scale industrial purposes. Our SAE 4140 Alloy Round Bar are one of the best selling known for its  durable leak-proof property.

SAE 4140 Alloy Round Bar Specification

Standards Designation
ASTM B 473

 

Length Diameter
100mm to 6000mm 5mm to 500mm

SAE 4140 Alloy Round Bar Chemical Composition


Min. %		 Max %
Carbon 0.36 0.44
Silicon 0.10 0.40
Manganese 0.65 1.10
Chromium 0.75 1.20
Molybdenum 0.15 0.35
Phosphorous 0 0.04
Sulphur 0 0.04

SAE 4140 Alloy Round Bar Physical Properties

DENSITY (G/CM 3) 8.08
DENSITY (LB/IN 3) 0.292
MELTING POINT (°C) 1425
MELTING POINT (°F) 2600

SAE 4140 Alloy Round Bar Mechanical Properties

Mechanical Property Designation R S S *T U V W
Limited Ruling Section mm 250 250 150 100 63 30 20
Tensile Strength Mpa Min 700 770 770 850 930 1000 1080
Max 850 930 930 1000 1080 1150 1230
0.2% Proof Stress Mpa Min 480 540 570 655 740 835 925
Elongation on
5.65√S0 %		 Min 15 13 15 13 12 12 12
Izod Impact J Min 34 27 54 54 47 47 40
Charpy Impact J Min 28 22 50 50 42 42 35
Hardness Brinell HB Min 201 233 233 248 269 293 311
Max 255 277 277 302 331 352 375
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