Steel 4140 SA 193 B7 Cold Drawn Quenchec and Tempered Steel Round Bars

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
• Surface Treatment: Polished
• Alloy: Alloy
• Special Use: Mold Steel
• 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

Product Description

 

Steel 4140 SA 193 B7 Cold Drawn Quenchec and Tempered Steel Round bars

1.ASTM A193 B7 Steel Round Bar
ASTM A193 Grade B7 bolts and threaded studs are manufactured from a chromium-molybdenum steel (AISI 4140) and are quenched and tempered (heat treated) to develop the desired mechanical properties (strength).

2.ASTM A193 Steel Bar Condition ,Size and applications 

Delivery condition	Size	Tolerance	Application
Hot rolled+QT	16-120mm	by standard	For Anchor bolts, U bolts, etc
Cold Drawn+QT	5mm to 100mm	h9 h10 h11	For Threaded rod,stud bolts, etc
Peeled+QT	20mm-120mm	h9 h10 h11	For Threaded rod,stud bolts, etc

3.ASTM A193 B7 Steel / AISI 4140 Chemical composition

lement	Content
Carbon, C	0.380 - 0.430 %
Chromium, Cr	0.80 - 1.10 %
Iron, Fe	96.785 - 97.77 % (As remainder)
Manganese, Mn	0.75 - 1.0 %
Molybdenum, Mo	0.15 - 0.25 %
Phosphorous, P	≤ 0.035 %
Silicon, Si	0.15 - 0.30 %
Sulfur, S	≤ 0.040 %

4.ASTM A193 B7 Mechanical property (QT condition)

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