ASTM A193 B7 Vs A193 B7m / ASTM A193 B7 B7m Cold Drawn Qt Steel Bars

• Type: Alloy Steel Bar
• Standard: ASTM, A193 B7 B7m B16
• Technique: Quenched and Tempered
• Application: Die Steel Bar, High Strength Bolts, Stud, Threaded Rods
• Surface Treatment: Oiled
• Alloy: Alloy
• Model NO.: astm a193 b7 b7m
• Special Use: Mold Steel, Cold Heading Steel, Oil&Gas
• Grade: ASTM A193 B7 B7m B16
• MOQ: 2 Tons
• Straightness: Max 1mm/M
• Length: 3m 12FT, 6m
• Transport Package: Anti-Rust Packing
• Specification: M5-M100
• Origin: China
• HS Code: 72283090
• Production Capacity: 3000tons/Month

Product Description

 

ASTM A193 B7 vs A193 B7M / astm a193 b7 b7m cold drawn qt steel bars 

ASTM A193 Grade B7 Chromium Molybendum steel, normally AISI 4140, heat treated to 28-32Rockwell Hardness, 125,000 PSI tensile strength, 105, 000 PSI yield. It will hold it's strength to 1000 degrees F. This grade of studbolts are engineered to mate with ASTM A194 Grade 2H Heavy Hex Nuts.
 

1.A193 B7M and B7  material 4140 chemical composition: (same raw material)

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.A193 B7M vs B7 steel mechanical property
 

 

Grade	Sizes	Tensile ksi, min	Yield, ksi, min	Elong, %, min	RA % min	HBW	HRC
A193 B7	Up to 2-1/2	125	105	16	50	321 max	35 max
	2-5/8 - 4	115	95	16	50
	4-1/8 - 6	100	75	18	50

 

3.Sizes we can offer:

 

Delivery condition	Size	Length
Hot rolled+QT	16-120mm	As required
Cold Drawn+QT	5mm to 100mm	As required
Peeled+QT	20mm-120mm	As required

 

4.Surface: Anti-rust Oiled
5.Packing : Anti-rust plastic firm, then wooven cloth
6.Typical Applications :ASTM A193 B7 B7M threaded rods, stud bolts, Heavy hex bolts, nuts and so on.
7.MOQ: 2 tons
8.Samples: Free sample supplied before shipment
9.Straightness of our QT steel round bars: max 1mm/m
10.Delivery time: 7-30 days upon to your sizes&quantity.
11.Payment term: TT,LC,West Union...etc 
12.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.

CONTACT: MS Phoebe Chen