SAE 4140 / ASTM A193 B7 Cold Drawn QT (Quenched & tempered) Steel Bars
SAES 4140 STEEL QUENCHED AND TEMPERED TO ASTM A193 B7 PROPERTIES, USED FOR THREADED ROD, ANCHOR BOLTS, STUD BOLTS AND SO ON.
1.Raw Meterial AISI / SAE 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 % |
2.AISI / SAE 4140 Steel Q&T to ASTM A193 B7 properties
Tensile Strength: Min 860Mpa
Yield Strength: Min 720Mpa
Elongation: Min 16%
Reduction Area: Min 50%
Hardness: Max 35HRC
3.Delivery condition and available sizes :
Hot rolled steel round bar :M12-M310
Hot Rolled & QT (Quenched and tempered): M12-M120
Cold Drawn&QT (Quenched and tempered):M6-M120
Peeled+QT(Quenched and tempered):M20-M120
4.ASTM A193 B7
ASTM A193 is alloy steel bolting material for pressure vessels, valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications.
Material according to ASTM A193 B7 is often available in national coarse (UNC) thread pitches, if being used in traditional applications, threads are specified 8 threads per inch (tpi) for diameters above one inch.
5.MOQ:1ton per size
6.Straightness: max 1mm/m , so that it can protect the moulds and gurantee smoothly producing during the threading and machining.
7.Payment terms: T/T or L/ C
(1)30% paid by T/T and rest 70% by T/T upon the copy of B/B.
(2)100% irrevocable L/C at sight
8.Delivery time:within 7 days after your deposit or L/C.
9.Trade term: FOB CFR CIF
10. Mark: including steel material, heat No., pieces, weight, date and so on.
11.Quality control:
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 , if you have any need for our producrs,please contact us freely.
12.Our Services
Capability from Raw material to processing to final products under one Roof .
Highest customer satisfaction Economy of products Absolute reliability
Highly-qualified and motivated personnel
No tolerance of errors Continuous optimisation of all processes
Audited Supplier 
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