Hot Rolled Alloy Structural Steel Round Bar SCM440

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

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Product Description:

Hot Rolled Alloy Structural Steel Round Bar SCM440    

Technical Paramenters 




Gradeaisi4140 astm4140 sae4140 42CrMo,1.7225,scm440,42CrMo4
Commoditysteel round bar/round steel bar/round bar steel
Techniquehot rolled
Lengthcanbe required to 3-12m
Sizes tolerancelength: +/-100mm,straightless:3mm/m
Application1) General service industries (petroleum, food, chemical, paper, fertilizer, Fabric, aviation and nuclear)
2) Fluid, gas and oil transport
3) Pressure and heat transmission
4) Construction and ornament
5) Boiler heat exchangers
Advantages of this material1) High fatigue strength and impact resistance after tempering
2) Good low-temperature impact toughness
3) No obvious temper brittleness
Quality Condition1): Straightness: 3mm/m (max)
2): Corner Radius: 3(max)
3): The ends will be end cut or gas cut
4): No cracks on the surface
Packing1): Paint oil on the surface to protect steel bars from rusting.
2): Bundle packing by Iron Strips.
3): Bundle weight is from 2mt to 3 mt.
4): Two or three tags will be attached on each bundle.
MOQ5 tons for each sizes

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 

 Hot Rolled Alloy Structural Steel Round Bar SCM440

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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