• Model NO.：SA 193 B7 Steel 4140
• Products：Qt Steel Round Bars
• Grade：AISI 4140 Steel
• Property Standard：ASTM A193 B7
• Transport Package：Standard Export Packing
• Specification：M12-M100
• Origin：China
• HS Code：72283090
• Production Capacity：3000tons,Month

Dia

Minimum temperature

Tensile strength
Mpa Min

Yield strength
Mpa Min

Elongation
% Min

Reduction of area
% Min

Hardness
Max 

Below 65mm

593 ° C

860

720

16

50

35 HRC

65mm to 100mm

593 ° C

795

655

16

50

35 HRC

100mm to 120mm

593 ° C

690

510

18

50

29 HRC

5.ASTM A193 B7 Steel Bar applications:
ASTM A193 B7 Threaded Rod,Ahchor Bolts, Stud Bolts, U-Bolts, Hex Bolts, J Bolts for oil&gas industries ,wind power projects and enginnering projects and so on.

6.Advantages of our A193 B7 QT steel round bars
1.QT to be finished by Medium frequency continuous tempering furnace
2.Good straitness :Max 1mm/m for hot rolled + QT bars and 0.5mm/m for cold drawn +QT bars
3.Smooth surface from any scales and cracks
4.Uniform microstructure 
5.Good mechanical property 
6.Full set of Strength report and MTC to be traced

7.A193 B7 QT steel round bars Packing details
Packing: Surface oiled - plastic firm -Anti water Woven Cloth
Label Marking heat no., sizes, length, pcs, weight ,origin and so on.
Weight per bundle: About 1 tons or as required

8.Inspection:
We company have good QC inspection tear and full set of inspect equipment including: UT test machine, Tensile testing machine,Hardness testing machine,Dimensional measuring instrument,f,spectrometer,Metallographic microscope and so on, so that we can always supply good mateterials for various projects and industries .
 

9.Payment term: TT or LC/
10.Delivery condition : 7-30 days upon to the detailed order.
11.Free Sample applied