B7 B16 Cold Drawn Steel Bar Thread Bar Alloy Steel

Basic Info

Model NO.	steel bar
Special Use	Free Cutting Steel, Mold Steel
Application	Structural Steel Bar
Material	Alloy Steel Round Bar
Main Grade	ASTM A193 B7 B16 4140 4150 42CrMo4 5140
Main Shape	Round Bar,Square Bar and Hex Steel Bar
Ready Stock	Yes
Transport Package	Anti-Rust Packaging
Specification	dia: 5mm-130mm
Trademark	customized
Origin	China
Production Capacity	2000tons

Product Description

B7 B16 cold drawn steel bar thread bar alloy steelASTM A193 B7 5140 cold drawn round bar hex steel for bolts hardwareASTM A193 GR.B7 B16 B7M cold drawn steel bar QT steel bar
1.ASTM A193 GR.B7 QT cold drawn steel bar

QT steel bar Used in the manufacture of shafts, connecting rods, gears and boltsHarden ability is better, High overall mechanical properties, good low temperature impact toughness, low notch sensitivity, with temper brittleness2.Process for Steel round barBlast Furnance→ Molten Iron Pretreatment→Converter→LF→VD/RH→ContinuousCasting→Hot Rolling(KOCKS)→ Heat Treatment→ UT Inspection→Finish ProductEAF→LF→VD/RH→ Continuous Casting→Hot Rolling(KOCKS)→ Heat Treatment→ UT Inspection→ Finish Product.

3..ASTM A193 Gr.B7 Cold drawn steel bar Typical applications

Fastners,high strength bolts&nuts,thread rods

4.ASTM A193 Gr.B7 cold drawn steel bar main type and avaliable sizes

Round bars	5mm-130mm
Suqare bar	6*6mm-100*100mm
Flat bars	3mm*20mm-50mm*100mm
Hex bars	6mm-100mm
Bar Finsihe	Peeled, Cold Drawn, TurnedTurned & Polished, Centreless Ground

5.ASTM A193 Gr.B7 Cold drawn steel bar size tolerance

h9,h10,h11 or other tolerance according to client's requirement

6.ASTM A193 Gr.B7 Cold drawn steel bar chemical composition(%)

Grade	C	Cr	Si	S	Mn	P	Mo
ASTM A193 Gr.B7	0.37 - 0.49	0.80 - 1.10	0.15 - 0.35	0.04 max	0.65 - 1.10	0.035	0.15 - 0.25

7.ASTM A193 Gr.B7 Alternative grade in different standard

GB	42CrMo
ASTM	4140
JIS	SCM440
DIN	1.7225

8.ASTM A193 Gr.B7 Typical Mechanical Properties

Grade	Tensile Strength Mpa	Yield Strength Mpa	Elongation%	Reduction%	-40ºCAkv2/J	Hardness
10.9	≥1040	≥940	≥9	≥48	≥50	HRC32-39
8.8	≥830	≥660	≥12	≥52	≥70	HRC23-34

9.Straightness: 1mm/m(max)
10. Steel bar Packing:
*Bars from different heats will not be mixed and dispatched.
*Bars will be bundles and securely metal strapped in 3 min places of the bar length and tagged properly.
*For further processing products such as cold drawn/peeled or heat treated goods, plastics bag wrapped or pallet loading is available according to customer's demands.

11.Delivery time of steel bar:
7-10days of stock,30 days after order confirmed of new material

12.Payment term:TT or LC

13.Free sample:Yes

14.steel bar Inspection: Spectral Tested, Microstructure Tested,Hardness Test,Macrostructure Test,UT test

15.Our cold drawn factory equipments
We adopt advanced production technology and first-class processing equipments, such as heat treatment furnace, straightening machine, centerless grinding machine, polishing machine, as well as lathing and milling machine etc.

15.Our steel bar mill's certificates

ISO901&ISO.TS16949,ISO4001,OHSAS18001
Special Equipment Manufacturing License of P.R.C for pipeline plate,steel plate for boiler&Vessel;
ISO/TS16949 2009 for Manufacturing of Special steel;
Europe CE Mark Certificate;JIS MARK,KS MARK.

 

 

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