Loading Port:China main port
Payment Terms:TT OR LC
Min Order Qty:30 m.t.
Supply Capability:10000 m.t./month
AISI 4340 Forged Steel Round Bars
Technical Paramenters
Chemical Composition | Mechanical Properties (In Quenched & Tempered State) | ||
C | 0.38-0.43 % | Tensile strength(MPA) | ≥980(100) |
Si | 0.15-0.35 % | Yield strength (MPA) | ≥835(85) |
Mn | 0.60-0.80 % | Elongation (δ5/%) | ≥12 |
Cr | 0.70-0.90 % | Reduction in Area (ψ/%) | ≥55 |
Ni | 1.65-2.00 % | Impact (J) | ≥ 78 |
P | ≤0.035 % | Impact toughness value αkv (J/cm2) | ≥98(10) |
S | ≤0.040 % | Hardness | ≤269HB |
Mo | 0.20-0.30 % | ||
Standard | ASTM A29/A 29M-05 | ||||||||||
Grade | 4340 | ||||||||||
MOQ | 1 Metric Ton | ||||||||||
Diameter | 8mm~1500mm | ||||||||||
Length | 6m,12m or as required. | ||||||||||
Diameter Tolerance | As required | ||||||||||
Condition of delivery | Hot rolled,Cold Rolled or as required. | ||||||||||
Products Show
Product Overviews
Steel wire, Steel Round bar
Diameter: 0.14mm-2000mm
Steel Square bar
Size : 50mm * 50mm-600mm *600mm
Steel Plate(sheet), flat steel bar
Thickness: 0.1mm-800mm Width: 10mm to 1900mm
Cold-rolled Plate(sheet)
Thickness: 0.1-8mm Width: 1000mm
Hot-rolled Plate(sheet)
Thickness: 6-200mm Width : 210-1900mm
Surface: 2B, BA, 6K, 8K, 12K, etc.
Welded/seamless Steel Pipe(tube)
outer diameter: 6-219mm wall thickness: 1-35 mm.
Length:according to the customer's requirements.
Condition of delivery
Hot-rolling+annealing,normalizing+tempering,quenching+tempering,cold-drawn or according to the customer's requirements.
Surface:rough machining,fine machining,polishing,bright,pickling,black or according to the customers’ requirements.
Furnaces for metallurgical processing electrode arc + LF,VD,VOD,ESR,Vacuum consumable electrode.
Ultrasonic inspection 100% ultrasonic inspection for any in perfections or according to the customers’ requirements.
All of our steels can be customized(standard GB, ASTM, JIS, DIN, etc.)
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.
FAQ
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?
EXW, FOB, CIF, FFR, CNF
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
