En36b 12crni3a Case Hardening Steel Round Bar

Customization: Available
Type: Alloy Steel Bar
Standard: AISI, ASTM, GB, JIS, DIN, BS

Product Description

Basic Specifications

Model NO.En36B, 12CrNi3A
TechniqueHot Rolled
ApplicationStructural Steel Bar
SurfaceBlack, Rough Machined, Turned
Special UseGear, Wheels, Bearing
Product NameEn36b 12crni3a Case Hardening Steel Round Bar
StandardGB 12crni3a / JIS Snc22
Delivery ConditionHot Rolled, Forged, EAF+LF+VD
Round BarDia 4-800mm
Square Bar4*4mm - 100*100mm
Flat BarThickness: 2-100mm, Width: 10-500mm
OriginChina

Chemical Composition

C Mn Si Cr Ni S (max) P (max)
0.12-0.18 0.30-0.60 0.10-0.35 0.60-1.10 3.00-3.75 0.05 0.05

Mechanical Properties

Tensile Strength (N/mm2) Elongation % Impact Izod (J) Impact KCV (J) Hardness (HB) Reduction of Area
1100 15 40 35 341 50

Heat Treatment Guidelines

Process Temperature & Cooling Details
Forging Heat to 1150°C. Hold until uniform. Minimum 850°C. Cool slowly in ashes or sand.
Annealing Heat to 830°C-850°C. Cool in furnace.
Normalising Heat to 870°C-900°C. Cool in still air.
Stress Relieving Annealed: 600°C-650°C. Hardened: 500°C-550°C. Cool in still air.
Hardening Heat to 830°C-880°C. Quench in oil or polymer.
Tempering Heat to 450°C-700°C. Note: Avoid 200°C-420°C to prevent temper brittleness.

Material Display

En36b 12crni3a Steel Round Bar 1
En36b 12crni3a Steel Round Bar 2

Quality Assurance & Testing

  • Ray detection (RT)
  • Ultrasonic testing (UT)
  • Magnetic Particle Testing (MT)
  • Penetration testing (PT)
  • Eddy current flaw detection (ET)

Available Product Range

  • Special Structural Steel
  • Boiler and Pressure Vessel Steel
  • Wear-resistant & High Strength Plate
  • Stainless Steel Plate & Pipes
  • Marine Engineering Steel
  • Die & Mold Steel

Frequently Asked Questions

Are you a manufacturer or a trader?
We are a group of companies with owned manufacturing bases and trading divisions, specialized in special steel including alloy structural, carbon, and stainless steel.
How is the product quality guaranteed?
We provide third-party certificates (such as TUV, CE) and maintain a complete inspection system where every process is monitored by QC.
What is the typical delivery time?
We maintain ready stock for most material grades. For non-stock items, the lead time is approximately 5-30 days after order confirmation.
What payment terms do you accept?
We primarily accept T/T (Telegraphic Transfer) or L/C (Letter of Credit).
Can you provide samples for testing?
Yes, we can provide samples for approval before placing a formal order. Free samples are available if the material is currently in stock.
Do you offer custom processing services?
Yes, we can follow your drawings for oxygen, plasma, or laser cutting, and provide advanced testing like ultrasonic testing (EN10160).

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