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DIN EN 20CrMo4 (1.7321) Alloy Steel Bar / Rod

De bonne qualité Tube en acier étiré à froid en ventes
De bonne qualité Tube en acier étiré à froid en ventes
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DIN EN 20CrMo4 (1.7321) Alloy Steel Bar / Rod

Chine DIN EN 20CrMo4 (1.7321)  Alloy Steel Bar / Rod fournisseur
DIN EN 20CrMo4 (1.7321)  Alloy Steel Bar / Rod fournisseur DIN EN 20CrMo4 (1.7321)  Alloy Steel Bar / Rod fournisseur

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Détails sur le produit:

Lieu d'origine: Chine continentale
Nom de marque: UST
Certification: ISO 9001:2008
Numéro de modèle: En 20CrMo4

Conditions de paiement et expédition:

Quantité de commande min: 3 tonnes métriques
Prix: USD 800-2000 / Metric Ton
Détails d'emballage: En emballage standard d'exportation et matériel navigable avec le paquet rectangulaire de forme, cou
Délai de livraison: 15-35 jours
Conditions de paiement: L/C, T/T, D/A, D/P
Capacité d'approvisionnement: 1000 tonnes métriques par mois
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Description de produit détaillée
Matrial: acier allié la norme: GIGAOCTET, ASTM, DIN, JIS
Qualité: 20CrMo4 (1,7321) Diamètre: 4-1600mm
Longueur: En-dessous de 16 mètres Forme: barre ronde
Techniques: Étiré à froid ; Laminé à chaud ; Laminé à froid ; Forgé de surface: Noir, lumineux, poli, épluché, ou sur demande
Essai par ultrasons: 100% UT passé Traitement: Recuit ou éteint et gâché fourni
Extrémité: Extrémité biseautée et simple au besoin Inspection de qualité: GV, la BV etc.
Un service: Le service de coupe et l'inspection de tiers est fourni



One of the most popular and widely used carborizing steels available. 20MoCr4 is a hardenable chromium, molybdenum, nickel low steelalloy steel often used for carburizing to develop a case-hardened part. This case-hardening will result in good wear characteristics.




Gears, shafts and other applications where a hard carborized case and a tough core are desired.


SUPPLY RANGE OF of EN 20CrMo4 1.7321

-Dimension: Diameter 4-1600 mm, any length below 16 meters

-Delivery Conditions:

Cold drawn: 4-100 mm

Peeled: 30-160 mm

Grinded: 4- 600 mm

Turned: 130-1200 mm

Hot rolled: 12-320 mm

Hot forged: 130-1600 mm


-HOT rolled; Cold rolled; Forged; Cold Drawn

-Heat Treatment: Untreated, Annealing, N+T, Q+T

-Smelting: EAF+LF+VD (+ESR)

-Surface Finish: Black, Rough Machined, Peeled, Turned or upon request

-UT 100% passed

-Cutting service provided

-Third Party inspection is acceptable (SGS, BV etc.)


DIN EN 20CrMo4 (1.7321)  Alloy Steel Bar / Rod




ASTM A213; ASTM A335; ASTM A519; ASTM A106; ASTM A29; JIS G3462; JIS G3458; JIS G3444; JIS G4053; DIN17175; DIN1629; DIN2391; GB/9948, GB/6479; GB/T8162; GB/T8163; GB/T 3077; EN 10297; EN 10084; EN 10083; ISO 683/11; IOS 683/10; IOS 683/1; etc.



Chemical Requirements, Composition, %


C Si Mn P S Cr Mo
0.17-0.23 max 0.4 0.7-1.0 max 0.035 max 0.035 0.3-0.6 0.4-0.5



20CrMo4 - General Mechanical Properties


Rp0.2 (MPa)
Rm (MPa)
KV/Ku (J)
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
481 (≥) 945 (≥) 33 11 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 443



Quality Assurance


Below inspection will be done in the production.
(1) ray detection---RT;
(2) ultrasonic testing---UT;
(3) Magnetic Particle Testing-MT;
(4) penetration testing-PT;
(5) eddy current flaw detection-ET

DIN EN 20CrMo4 (1.7321)  Alloy Steel Bar / Rod





Soft Annealing
Heat to 650-700oC, cool slowly. This will produce a maximum Brinell hardness of 207.

Heat Treatment


Treatment Temperature Cooling
Case hardening 880-980oC Oil (water), hot bath 160-250oC
Carburising 880-980oC Oil (water), hot bath 160-250oC
Direct hardening 860-900oC Oil, hot bath 160-250oC
Core refining 860-900oC Oil, hot bath 160-250oC
Core refining 780-820oC Oil, hot bath 160-250oC
Tempering 150-200oC Air


Hardenability Diagram

Hot forming temperature: 1050-850oC.

Machining is done prior to carburizing to within as close a tolerance as possible. Finish machining, after heat treatment and/or carburizing, should be at a minimum so as not to impair the hardened case of the part. Machining may be done by conventional means prior to heat treatment - after carburizing machining is usually limited to grinding.

The alloy may be welded by conventional methods, usually gas or arc welding. Preheating at 200oC is beneficial and subsequent heating after welding is recommended - consult the approved weld procedure for the method used.

Cold working
The alloy may be cold worked in the annealed condition by conventional methods. Cold working, as with machining, should be done to as close a tolerance as possible before heat treatment or carburizing.

DIN EN 20CrMo4 (1.7321)  Alloy Steel Bar / Rod


What we can offer?

-We offer a wide range of steel products in a wide variety of dimensions and executions, according to the common international specifications or customize.

-Machining and heat treatment are available.

-Also, we advise you in choosing the right materials.


Shape Available

  • Solid round bar
  • Flat bar
  • Square bar
  • Hexagon bar
  • Block
  • Plate
  • Sheet
  • Wire rod
  • Strip


Our Advantages

  • High mechanical property and quenching, enable the surface share equal hardness after deal with it
  • Good polishing and low roughness
  • Making the heat-treatment to harden condition before using it
  • Competitive price
  • Fast production lead-time
  • All the material are inspected with 3 times to meet the highly standards
  • Pure steel quality & stable quality to be guarantee



DIN EN 20CrMo4 (1.7321)  Alloy Steel Bar / Rod



Available Size:
-Round: Dia. 4 -1600 mm
-Flat: T. 10-120 mm x W. 60-810 mm
-Block: T. 80-1200 mm x W. 100-1600 mm




1. Both T/T and L/C will be acceptable

2. Trade Terms: FOB, CIF, CFR

3. The delivery will be in 10-15 days if have stock; For customized items, the delivery will be negotiated by both parties

4. Shipping by sea freight from Shanghai Port (PRC) for Bulk orders, by airfreight or express for samples




Shanghai Unite Steel Trading Co., Ltd

We are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.

In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china.

What’s more, we have built long, deep and close business relationship with dozens of steel company, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!




Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price.

Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.

Q: Delivery time?
A: We have ready stock for most of material grades in our warehouse. If the material doesn't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.

Q: What is the payment term?
A: T/T or L/C.

Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come.




We are happy to answer your questions and make you an offer for these and other materials. Contact us now for more information.


Your Contact Person

Ms Chilli Ho

Phone/Wechat/Whatsapp +86-181-0187-5575




Personne à contacter: Chilli.ho

Téléphone: +8618101875575

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