35CrMo Steel Pipe, Cylinder Seamless Tube, High Pressure Structural Alloy Steel Pipe

Customization: Available
Standard: DIN, JIS, AISI, ASTM, GB, BS
Technics: Forged

Product Description

35CrMo Steel Pipe, Cylinder Seamless Tube, High Pressure Structural Alloy Steel Pipe

Our business specializes in Tool steel, Mold steel, Die steel, and Alloy steel. Key products include Plastic mold steel (P20, 1.2083, NAK80, 1.2312, 1.2316), Hot Work steel (H13, 1.2344, FDAC, SKD61), Cold work steel (O1, Cr12, Cr12Mov, SKD11, M2, T1), and Carbon steel (Q235, S45C, S50C, 4140, SCM440).

📊Basic Info
Model NO.
35Crmo
Application
Structural Steel Bar
Surface
Polished
Alloy
Alloy
Hardness
28-34HRC
International Standard
AISI, ASTM, BS, DIN, GB, JIS
Shape
Plate/Flat Bar/Round Bar/Block
Product Type
Engineering Steel / Plastic Tool Steel
Size Range
T: 10~800mm W: 100-2200mm
Inspection
100% Ut 1921 Step E/E~D/D
🛠️1. Base Parameter
Steel Grade GB JIS AISI
35Crmo 35Crmo - -
Chemical Composition (%) C: 0.32~0.40 Si: 0.17~0.37 Mn: 0.40~0.70 Cr: 0.80~1.10 Mo: 0.15~0.25
Specification Flat Bar Round Bar
Dimensions T: 16-400mm | W: 185-2200mm Dia: 20-200mm
Condition Hot-rolled; Black/Milled; 28-34HRC Hot-rolled; Black/Milled; 28-34HRC
🔥2. Fabrication and Heat Treatment

Forging: 1.2083 mold steel are forged at 1093°C (2000°F) down to 899°C (1650°F).
Annealing: 810 - 830 °C | Hardness after annealing: Max 230 HB
Hardening: 970 - 990 °C | Quenching: Oil, Vacuum | Hardness after quenching: 30-36 HRC

Heat Treatment
💡3. Application

Molds for corrosive plastic materials such as PVC, recycled polymers etc., molds for chemically aggressive plastics and plastics containing abrasive fillers, mold inserts, dies and gauges for PVC extrusions, screws and barrels for extruders, molds for automotive, food, medical and optical industry such as spectacles, compact discs, lenses.

Application
⚙️4. Our Service
  • Steel plates: Cutting by bandsaw machine, milling, heat treatment, etc.
  • Round bars: Cutting by bandsaw machine, peeling, grinding and turned, etc.
  • Quality Testing: Ultrasonic testing and hardness testing.
Service 1 Service 2
5. Feature
Vacuum degassing refining processing for high steel purity, suitable for polishing or etch processing.
Pre-harden state delivery; no need for additional heat treatment, shortening construction time.
Excellent machining and polishing performance; suitable for nitriding and chrome plating.
Uniform hardness (even up to 400mm thick) with good toughness.
Good integral mechanical performance under high temperatures.
Strong heat-resistance and fatigue-resistance.
Feature
🏢6. Professional Steel Solutions

Established as a leading trading group in advanced special steel, die steel, and alloy steel. We cooperate with over 20 famous steel mills in China to ensure a rich spot stock. Our facilities include horizontal and vertical sawing machines, milling machines, bilateral milling machines, precision milling machines, and plane grinders to provide high-precision products with short lead times.

Product Range:
PLASTIC MOULD STEEL: 1.2311, 1.2312, 1.2738, P20, 1.2083, 1.2316, NAK80
HOT WORK MOULD STEEL: 1.2344, SKD61, H13, H11, FDAC, 8407
COLD WORK MOULD STEEL: SKD11, D3, SKS3, 1.2080, 1.2379, CR12MOV, O1, D2
STRUCTURAL ALLOY STEEL: 4140, 20CR, 40Cr, 35CrMo, 42CrMo, SCM440, 1.7225

Stock Overview
📦7. Stock & Delivery

High-quality stock available for various steel flat bars and round bars including Alloy, Cold work, Hot work, and Plastic mold steel.

  • Standard Stock: 7-15 days delivery.
  • Customized Products: 15-30 days delivery.
Stock List Loading
🔥8. Hot Sell Products
Hot Sell

Plastic Mold Steel: P20 / NAK80 / 2083R
Cold Work Steel: DC53 / Cr12 / M2 / T1
Hot Work Steel: H13 / H13R / 1.2344
Alloy Steel: 20Cr / 4140 / SCM440

FAQ
How do you ensure the quality of 35CrMo steel?
Before loading, all products undergo 100% ultrasonic inspection (UT). Quality grades conform to SEP 1921-84 E/e, D/d, or C/c standards as per customer requirements.
What are the main applications of 35CrMo alloy steel?
It is primarily used for manufacturing critical machine parts that endure impact, bending, torsion, and high loads, such as cylinders and high-pressure structural pipes.
Is this steel suitable for plastic molds?
Yes, 35CrMo is highly suitable for plastic molds, especially those requiring polishing or etch processing, due to its vacuum degassing refining and uniform hardness.
What is the typical hardness of your pre-hardened steel?
Our 35CrMo steel typically comes with a pre-hardness of 28-34 HRC, allowing it to be used directly for mold processing to shorten construction periods.
What are your typical lead times for delivery?
For items currently in stock, delivery takes 7-15 days. For customized specifications or non-stock items, the lead time is generally 15-30 days.
What surface conditions can you provide?
We offer multiple surface finishes including Black, Milled, Polished, and Machined (turned or ground) depending on the product shape and customer needs.

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