ASTM A193 B7 Chemical Composition / ASTM A193 B7 Qt Round Steel Bar Manufacturer
| Type |
Steel Round bars |
| Condition |
Quenched and tempered |
| Standard |
F1554-105/A193-B7 |
| Grade |
4140 Q&T |
| Material |
Alloy Steel |
| Application |
Threaded Rods, Anchor Bolts, Stud Bolts |
1.Supply Condition and Size range
Hot Rolled 4140 steel bar: Ø16mm-310mm
Forging 4140 steel bar: Ø250mm-1000mm
Cold drawn 4140 steel bar:Ø12-100mm
Q&T 4140 steel bar:Ø16-310mm
2.A193 B7 Material AISI 4140 Chemical composition:
| Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
| % |
| SAE 4140 |
0.37-0.49 |
0.15-0.35 |
0.65-1.1 |
Max0.035 |
Max0.04 |
0.75-1.20 |
0.15-0.25 |
3.Property of ASTM A193 B7 Q&T steel round bars
| Dia |
Minimum temperature |
Tensile strength |
Yield strength |
Elongation |
Reduction of area |
Hardness |
| Below 65mm |
593 ° C |
860 |
720 |
16 |
50 |
35 HRC |
| 65mm to 100mm |
593 ° C |
795 |
655 |
16 |
50 |
35 HRC |
| 100mm to 160mm |
593 ° C |
690 |
510 |
18 |
50 |
29 HRC |
4.MOQ : 2tons per size
5.Delivery time : 7-20 days after order confirmation
6.Payment term: TT , LC ,CASH
7.Quality control of our factory:
Our factory 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, if you have any need for our producrs, please contact us freely.
Contact: MS Phoebe
Audited Supplier 
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