Round Steel 5115 Steel Bars

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Loading Port:
China main port
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Min Order Qty:
30 m.t.
Supply Capability:
10000 m.t./month

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Product Description:

Round Steel 5115 Steel Bars                                                 

Products Details 

1. good mechanical property 
2. high temper resistance 
3. hardened and tempered steel 
4. 12-250mm/200~650mm

Material standardized according to5115 round steel round bar
Unfinished products manufacturedPipes - profiles - squares
PropertiesExcellent mechanical features - good workability on high-speed automatic machines with easy fragmentation of the shavings made by the tool
Typical applicationsused for making heavy loading and sectional gear shaft,gear,connecting rod,eccentric shaft,rear axle shaft of car,parts of steam turbine,etc

Chemical composition (%)

0.37~0.45 0.90~1.200.17~0.37≤0.0350.90~1.20≤0.030     

Specifications: (approximate values)

Quenching Temp860 ±15 °C
Cool MediaOil
Tempering Temp600 ±15 °C
Cooling Mediaair

Mechanical features  

Tensile Strength (MPA)Yield Strength(MPA)Elongation(%)Reduction In Area(%)Impact Energy(J)Hardness(HB)
≥1080≥ 930≥ 12≥ 45≥ 63≥217

Products Show 


Product Overviews 

Product NameTypical GradesDiameter(mm)Standard adopted
Carbon Steel20 (1020/S20C/C22)Ø16-Ø300





40 (1040/S40C/C40)
45 (1045/S45C/C45)
Bearing SteelGCr9 (51100/SUJ1)Ø12-Ø250
GCr15 (52100/SUJ2/100Gr6)
GCr9SiMn (A485-Gr.1/SUJ3)


Cr-Mo Steel

20Cr (5120/SCr420H/20Cr4)Ø12-Ø250
40Cr (5140/SCr440/41Cr4)
Gear Steel20CrNiMoØ16-Ø600


Carbon Steel

 Mold bottom,   Plastic mold,   Construction machinery parts

 Automobile parts,   Security grills,   Screens,  Construction

 Bearing Steel  Aerospace,   Navigation,   Nuclear energy,   Chemical industry

 Electronic information,   Petrochemical,   Instrument and meter


 Cr-Mo Steel  Mechanism & Fasteners gear,    Stressed components for vehicles 

 Engines and machines,    Parts of larger cross-section


Gear Steel

All kinds of gears,   Statically and dynamically stressed component for vehicles

Engines and machine,   Larger cross-section parts,   Crankshafts 


Work Shop 


 Company Information 

CNBM International Corporation is the most important trading platform of CNBM group.

Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.



1, Your advantages?

     professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale

2, Test & Certificate?

      SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem

3,  Factory or Trading Company?

      CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department of these factories. Also CNBM is the holding company of many factories.

4, Payment Terms?

    30% TT as deposit and 70% before delivery.

    Irrevocable L/C at sight.

5, Trading Terms?


6, After-sale Service?

     CNBM provides the services and support you need for every step of our cooperation. We're the business partner you can trust.

     For any problem, please kindly contact us at any your convenient time.

We'll reply you in our first priority within 24 hours.

Packaging & Delivery

1, Packaging: seaworthy package or as required 

2, Delivery: 35-45 days or based on quantity

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