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High-Strength 30CrMnSiA Alloy Steel Plate for Aerospace and Defense Applications
High-Strength 30CrMnSiA Alloy Steel Plate for Aerospace and Defense Applications
High-Strength 30CrMnSiA Alloy Steel Plate for Aerospace and Defense Applications
High-Strength 30CrMnSiA Alloy Steel Plate for Aerospace and Defense Applications
High-Strength 30CrMnSiA Alloy Steel Plate for Aerospace and Defense Applications
High-Strength 30CrMnSiA Alloy Steel Plate for Aerospace and Defense Applications
High-Strength 30CrMnSiA Alloy Steel Plate for Aerospace and Defense Applications
High-Strength 30CrMnSiA Alloy Steel Plate for Aerospace and Defense Applications
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

High-Strength 30CrMnSiA Alloy Steel Plate for Aerospace and Defense Applications

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.

Premium Performance in Mission-Critical Environments

30CrMnSiA alloy steel is a high-strength, medium-carbon, quenched-and-tempered structural steel engineered for the most demanding aerospace and defense applications. Renowned for its exceptional tensile strength, impact toughness, and fatigue resistance, this material meets stringent military and aviation standards—making it ideal for components where reliability, durability, and weight efficiency are non-negotiable.
Manufactured under strict quality controls per GB/T 11251-2009 and GJB 2150A-2005 (China’s military specification), our hot-rolled 30CrMnSiA plates deliver consistent metallurgical properties across thicknesses from 10 mm to 200 mm. With full customization—including precision cutting, ultrasonic testing, and certified documentation—we support global aerospace OEMs, defense contractors, and engineering firms with mission-ready materials.

Why 30CrMnSiA Excels in Aerospace & Defense

Attribute Benefit in Critical Applications
Tensile Strength ≥1080 MPa Supports high-load structures without excessive mass
High Hardenability Enables uniform through-thickness properties in thick sections
Good Low-Temperature Toughness Maintains ductility down to –40°C (critical for high-altitude or arctic operations)
Controlled Impurity Levels Ultra-low S/P content minimizes crack risk in welded or forged parts
Excellent Machinability (after annealing) Facilitates complex component fabrication with tight tolerances
Proven Track Record Widely used in Chinese fighter jets, armored vehicles, and missile systems
⚠️ Note: Due to its medium-carbon composition, welding requires preheating (200–300°C) and post-weld stress relief to prevent hydrogen-induced cracking.

Chemical Composition (GB/T 11251 Standard)

Element Content (%) Purpose
Carbon (C) 0.28 – 0.34 Core strength via martensite formation
Silicon (Si) 0.90 – 1.20 Solid-solution strengthening; deoxidizer
Manganese (Mn) 0.80 – 1.10 Enhances hardenability and hot workability
Chromium (Cr) 0.80 – 1.10 Improves wear resistance and deep hardening
Sulfur (S) ≤ 0.025 Minimized to avoid hot shortness
Phosphorus (P) ≤ 0.025 Controlled to prevent cold brittleness
Residuals (Ni, Cu, etc.) ≤ 0.30 total Kept low for purity and weld integrity
The “A” suffix denotes higher purity vs. standard 30CrMnSi—essential for safety-critical parts.

Mechanical Properties (After Quenching & Tempering)

Property Typical Value Test Standard
Tensile Strength (Rm) 1080 – 1275 MPa GB/T 228.1
Yield Strength (Rp0.2) ≥ 835 MPa GB/T 228.1
Elongation (A5) ≥ 10% GB/T 228.1
Reduction of Area (Z) ≥ 45% GB/T 228.1
Impact Energy (20°C) ≥ 39 J GB/T 229
Impact Energy (–40°C) ≥ 88 J (premium grade) GB/T 229
Hardness 24–32 HRC (Q&T); ≤229 HB (as-rolled) GB/T 231.1 / ISO 6508
Properties optimized for thickness ≤100 mm; slight variation may occur in ultra-thick plates (>150 mm).

Typical Aerospace & Defense Applications

Sector Components
Military Aircraft Landing gear struts, wing spars, engine mounts, bulkheads
Helicopters Transmission housings, rotor hubs, tail boom fittings
Armored Vehicles Structural frames, suspension arms, turret supports
Missile Systems Launch canisters, guidance housing, thrust brackets
Naval Platforms High-stress deck fittings, weapon cradles
Unmanned Systems (UAVs/UUVs) Payload frames, actuator housings requiring strength-to-weight ratio
30CrMnSiA often replaces heavier carbon steels or more expensive nickel alloys when high strength at moderate cost is required.

Available Product Specifications

Parameter Details
Form Hot-rolled plate (black scale)
Thickness 10 mm – 200 mm
Width 1000 – 3000 mm (custom up to 3500 mm)
Length 2000 – 12,000 mm
Tolerances Per GB/T 709 (Class N); tighter on request
Surface Options As-rolled, shot-blasted, pickled, or oiled
Certifications Mill Test Report (EN 10204 3.1), UT per ASTM A578 (optional)

Custom Processing Services

We provide end-to-end support beyond raw plate supply:
  • Precision Cutting: Waterjet (up to 200 mm), plasma, or laser per your CAD files
  • Edge Preparation: Beveling for welding readiness (ISO 9692 compliant)
  • Ultrasonic Testing (UT): Full-volume inspection for internal flaws (Grade B/C per ASTM A578)
  • Heat Treatment: In-house Q&T or subcontracted to certified partners
  • Marking & Traceability: Laser/steel stamp with heat number, batch ID, and compliance codes
All processed parts are packaged to MIL-STD-2073 or customer-specific requirements.

Quality Assurance & Compliance

  • ✅ ISO 9001:2015 certified production
  • ✅ Full chemical & mechanical test reports
  • ✅ Batch traceability from melt to delivery
  • ✅ Third-party inspection accepted (SGS, BV, TÜV, etc.)
  • ✅ RoHS and REACH compliant (upon request)

Technical Support & Global Delivery

Our metallurgical team assists with:
  • Material selection vs. alternatives (e.g., 4340, 300M, 40CrNiMoA)
  • Welding procedure specifications (WPS)
  • Heat treatment cycle optimization
  • Export documentation (COO, CE, MSDS)
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High-Strength 30CrMnSiA Alloy Steel Plate for Aerospace and Defense Applications

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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
High-Strength 30CrMnSiA Alloy Steel Plate for Aerospace and Defense Applications
High-Strength 30CrMnSiA Alloy Steel Plate for Aerospace and Defense Applications
High-Strength 30CrMnSiA Alloy Steel Plate for Aerospace and Defense Applications
High-Strength 30CrMnSiA Alloy Steel Plate for Aerospace and Defense Applications

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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