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Steel Flat Bar 4130 4140
Steel Flat Bar 4130 4140
Steel Flat Bar 4130 4140

Steel Flat Bar 4130 4140

$800-1100 /Metric Ton

Min. Order:5 Metric Ton
Packaging & Delivery
Selling Units : Metric Ton
Bright steel bar.mp4
Product Description

4140 Cold Drawn Steel Flat Bar


4140 steel is a Chromium-Molybdenum through-hardening steel of medium hardenability. It is a general purpose high-tensile steel with medium strength level and good impact properties. We can supply 4140 Hot Rolled Steel Bar and 4140 Cold Drawn Steel Bar. Besides we can also produce 4140 heat treated steel bars such as 4140 Annealed Steel Bar, 4140 Normalized Steel Bar, 4140 quenched & tempered steel bar. We produce all kinds of shapes steel bars such as 4140 steel round bar, 4140 Square Steel Bar , 4140 Flat Steel Bar and 4140 Hexagonal Steel Bar. 4140 Cold Drawn Steel flat bar we produce is usually used in automotive and machinery industry.


4140 cold drawn steel bar we supply includes following advantages:

Consistent mechanical properties

Deep mechanical properties (from surface to the center according to your requirement)

Even hardness on the whole bars/Tougher and Increased strength

No brittle, UT testing/Precision size tolerance/Good straightness

Good Roughness/Professional technical service/Competitive price/Fast delivery



Specification of 4140 cold drawn flat steel bar we supply:

Sizes

(6-80)mm * (20-100)mm

Tolerances

+/-0.1mm

Corner Radius

0.5mm in

Straightness

1mm/m min

Surface roughness

Smooth and Bright

Mechanical properties

Yield strength and tensile strength can be improved

Machining

Suitable for machining 


1. 4140 steel equivalent material:

GB 

ASTM/SAE/AISI 

DIN 

SCM

AS /NZS1444

42CrMo

Aisi 4140 / sae 4140 / astm 4140

42CrMo4 / 42CrMoS4

SCM440

AS 4140

2. 4140 steel chemical composition:

Materail

Chemical Composition %

ASTM/SAE/AISI 

C

Si

Mn

S

P

Cr

Mo

Aisi 4140 / sae 4140 / astm 4140

0.38-0.43

0.15-0.35

0.75-1.00

0.035 max

0.035 max

0.80-1.10

0.15-0.25

 3. 4140 steel mechanical properties after quenching and tempering:

Mechanical Properties

Yield Strength (MPa)

Tensile Strength (MPa)

Elongation

Reduction of area

AKV (J)

930 min

1080 min

12% min

45% min

63 min

4. 4140 steel bar applications:

high strength stud bolt, Threaded Rods , wind power bolt, prestressed anchor bolts, post stressed anchor bolt, Steel Tie Rod , tie bar, tension rod, Tension Bar etc. Shaft, axle shaft, crankshaft, shaft for sleeve, linear shaft, pump shaft, rotor shaft, sensor shaft, spline shaft, drive shaft, mandrel shaft, transmission shaft, screw rod etc. CNC machines, precision CNC machines etc. Ejector pins and Ejector rods

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