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Hot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 - 200mm Custom Cutting As Request
Hot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 - 200mm Custom Cutting As Request
Hot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 - 200mm Custom Cutting As Request
Hot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 - 200mm Custom Cutting As Request
Hot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 - 200mm Custom Cutting As Request
Hot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 - 200mm Custom Cutting As Request
Hot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 - 200mm Custom Cutting As Request
Hot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 - 200mm Custom Cutting As Request
Specifications
Brand Name :
BAOSTEEL BENSTEEL HBIS XINGCHENG
Model Number :
30CrMnSiA
Certification :
ISO 9001
Place of Origin :
China
MOQ :
10 kgs
Price :
540 - 890 USD/Ton
Payment Terms :
L/C, T/T, Western Union
Supply Ability :
20Ton per week
Delivery Time :
5 - 12 days based on the quantity
Packaging Details :
standard packing for export
Products :
30CrMnSiA
Thickness :
10.0 - 200.0mm
Width :
1000-2200mm
Length :
2000-12000mm
Standard :
ASTM EN GB
Other Material :
Carbon Steel, Alloy Steel, Stainless Steel
Brand :
BAOSTEEL XINYU XINGCHENG HBIS
Service :
Cutting
Description

Hot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 - 200mm Custom Cutting As Request

Products Specification

Product Name 30CrMnSiA Alloy Steel Plate
Thickness 10mm~200mm
Width 1000~3000mm,common width is 1250mm,1500mm,2000mm,2200mm
Length 1000~12000mm,can as your request cut
Surface Clean,finished, blasting and painting or as your request
Delivery Hot Rolled, Controlled Rolling,Normalizing,Annealing, Tempering,Quanching, Q+T
Packing Steel Strapping,fixing in the Container,can customize
Thickness tolerance ±0.3mm
Application It is mainly used to make structural parts such as car girder, beam, transmission shaft and car chassis parts, which can reduce the weight of the parts.

Hot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 – 200mm Custom Cutting As Request

Overview

Hot Rolled 30CrMnSiA Alloy Steel Plate is a high-performance, medium-carbon quenched and tempered structural steel widely used in demanding industrial applications such as aerospace, defense, automotive, heavy machinery, and oil & gas sectors. Known for its exceptional combination of high strength, good toughness, and excellent hardenability, 30CrMnSiA meets the stringent requirements of critical components that operate under high stress, impact, or fatigue conditions.
Manufactured to international standards including GB/T 11251-2009 (Chinese National Standard) and GJB 2150A-2005 (Military Specification), our hot-rolled 30CrMnSiA plates are available in thicknesses ranging from 10 mm to 200 mm, with full customization options for length, width, and precision cutting per your engineering drawings or specifications.

Key Features & Advantages

  • High Tensile Strength: ≥1080 MPa after proper heat treatment
  • Excellent Hardenability: Ideal for parts requiring deep section hardening
  • Good Machinability: Responds well to CNC machining, milling, and drilling when properly annealed
  • Controlled Impurities: Low sulfur (≤0.025%) and phosphorus (≤0.025%) ensure high purity and weld integrity
  • Custom Cutting Services: Laser, plasma, or waterjet cutting available to exact dimensions
  • Wide Thickness Range: From thin structural plates (10 mm) to heavy-duty blocks (200 mm)
  • Consistent Quality: Produced via electric arc furnace + LF + VD refining for uniform microstructure
Note: While 30CrMnSiA offers good mechanical properties, it is classified as a medium-carbon alloy steel, which means preheating is essential before welding to avoid cold cracking. Post-weld stress relief is also recommended for critical applications.

Chemical Composition (Weight %)

Element Content (%) Role in Performance
Carbon (C) 0.28 – 0.34 Provides core strength and hardness through martensitic transformation
Silicon (Si) 0.90 – 1.20 Enhances strength via solid solution strengthening; improves oxidation resistance
Manganese (Mn) 0.80 – 1.10 Increases hardenability and tensile strength; improves hot workability
Chromium (Cr) 0.80 – 1.10 Boosts hardenability, wear resistance, and corrosion resistance
Sulfur (S) ≤ 0.025 Strictly controlled to minimize hot shortness
Phosphorus (P) ≤ 0.025 Limited to prevent cold brittleness
Nickel (Ni) ≤ 0.030 Residual; kept low to maintain cost and performance balance
Copper (Cu) ≤ 0.025 Residual; controlled to avoid surface defects
Note: Some premium grades may include trace Mo (0.10–0.30%) for enhanced temper stability.

Mechanical Properties (Typical Values After Quenching & Tempering)

Property Value Test Standard
Tensile Strength (σb) ≥ 1080 MPa GB/T 228.1
Yield Strength (σs) ≥ 835 MPa GB/T 228.1
Elongation (δ5) ≥ 10% GB/T 228.1
Reduction of Area (ψ) ≥ 45% GB/T 228.1
Impact Toughness (Akv, 20°C) ≥ 39 J GB/T 229
Impact Toughness (Akv, -40°C) ≥ 88 J (premium grade) GB/T 229
Hardness (HB) ≤ 229 (as-rolled); 24–32 HRC (after Q&T) GB/T 231.1
Performance may vary slightly based on plate thickness and heat treatment parameters.

Available Dimensions & Tolerances

Parameter Range
Thickness 10 mm – 200 mm
Width 1000 mm – 3000 mm (standard); custom up to 3500 mm
Length 2000 mm – 12000 mm (standard); longer lengths on request
Thickness Tolerance ±0.5 mm (for 10–50 mm); ±1.0 mm (50–100 mm); ±2.0 mm (>100 mm) per GB/T 709
Flatness ≤ 5 mm/m (Class N); tighter tolerances available upon request
Surface Finish Hot-rolled black scale (standard); shot-blasted or pickled optional

Custom Cutting Services

We offer precision cutting tailored to your project needs:
  • Laser Cutting: For intricate shapes (up to 25 mm thick)
  • Plasma Cutting: Cost-effective for medium-thickness plates (10–80 mm)
  • Waterjet Cutting: Cold-cutting process ideal for maintaining material integrity (up to 200 mm)
  • Flame Cutting: For heavy sections (>50 mm) with minimal thermal distortion
  • CNC Machining: Drilling, milling, beveling, and edge preparation available
All cut parts are deburred, marked with heat number, and packaged for safe shipment.

Common Applications

Industry Typical Components
Aerospace Landing gear brackets, engine mounts, structural frames
Defense & Military Armor components, weapon systems, vehicle chassis
Automotive Crankshafts, connecting rods, transmission gears
Heavy Machinery Excavator booms, hydraulic cylinders, gear housings
Oil & Gas High-pressure valves, drill collars, downhole tools
Rail & Transportation Axles, couplers, suspension arms
Thanks to its balanced strength-toughness profile, 30CrMnSiA is often selected where failure is not an option.

Heat Treatment Recommendations

For optimal performance, the following heat treatment cycle is recommended:
  1. Normalizing: 880–900°C, air cool (to refine grain structure)
  2. Quenching: 860–880°C, oil quench
  3. Tempering: 500–600°C, air cool (adjust based on required hardness)
Avoid tempering between 250–400°C to prevent temper brittleness.

Packaging & Delivery

  • Plates are bundled with steel straps and protected with anti-rust paper
  • Edges wrapped with plastic or wood to prevent damage during transit
  • Marked with grade, heat number, dimensions, and compliance certificates
  • Export-ready packaging (fumigated wooden pallets or crates available)
  • Lead time: 7–25 days depending on size and quantity
  • Global shipping via sea, air, or rail from major Chinese ports (Shanghai, Tianjin, Qingdao)

Why Choose Our 30CrMnSiA Plates?

✅ Mill-Direct Supply – No middlemen, competitive pricing
✅ Full Traceability – Each batch comes with Mill Test Certificate (EN 10204 3.1)
✅ Quality Assurance – ISO 9001 certified production; ultrasonic testing (UT) available per ASTM A578
✅ Technical Support – Our metallurgical engineers assist with material selection and processing advice
✅ Flexible MOQ – From single plates to bulk contracts

Frequently Asked Questions (FAQ)

Q: Is 30CrMnSiA weldable?
A: Yes, but with precautions. Preheat to 200–300°C, use low-hydrogen electrodes, and perform post-weld heat treatment (PWHT) if required.
Q: What’s the difference between 30CrMnSi and 30CrMnSiA?
A: The “A” denotes higher purity—lower P, S, and residual elements—making it suitable for critical aerospace and military uses.
Q: Can you supply certified material for ASME or EN projects?
A: While 30CrMnSiA is a Chinese grade, we can provide cross-reference data (e.g., similar to AISI 4130/4140 in performance) and full chemical/mechanical reports for approval.
Q: Do you offer surface treatments?
A: Yes—options include shot blasting, painting, galvanizing, or oil coating for temporary corrosion protection.
30CrMnSiA steel plate, hot rolled alloy steel plate, high strength steel plate 10-200mm, custom cut 30CrMnSiA, quenched and tempered steel plate, GB/T 11251 steel, aerospace alloy steel, military grade steel plate, 30CrMnSiA mechanical properties, China 30CrMnSiA supplier, precision cut alloy steel, heavy plate cutting service.
Hot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 - 200mm Custom Cutting As RequestHot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 - 200mm Custom Cutting As RequestHot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 - 200mm Custom Cutting As RequestHot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 - 200mm Custom Cutting As Request

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Product Detail
Brand Name :
BAOSTEEL BENSTEEL HBIS XINGCHENG
Model Number :
30CrMnSiA
Certification :
ISO 9001
Place of Origin :
China
MOQ :
10 kgs
Price :
540 - 890 USD/Ton
Contact Supplier
video
Hot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 - 200mm Custom Cutting As Request
Hot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 - 200mm Custom Cutting As Request
Hot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 - 200mm Custom Cutting As Request
Hot Rolled 30CrMnSiA Alloy Steel Plate Thickness 10 - 200mm Custom Cutting As Request

JIANGSU MITTEL STEEL INDUSTRIAL LIMITED

Verified Supplier
4 Years
jiangsu, wuxi
Business Type :
Manufacturer, Distributor/Wholesaler, Exporter
Main Products :
stainless steel roofing sheet, Stainless Steel Strip, Others stainless steel sheet
Total Annual :
>1000000
Employee Number :
>100
Certification Level :
Verified Supplier
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