20 Tahun Pengalaman | 1000+ Mitra Merek | Kustomisasi Penuh
Kami memiliki 20 tahun pengalaman industri, telah bermitra dengan lebih dari 1.000 merek, dan mendukung kebutuhan kustomisasi apa pun.
Technical Specifications
Product Overview
Metallurgical Characteristics
GB Q235 is a low-carbon structural steel with a ferritic-pearlitic microstructure that provides excellent balance of strength, ductility, and weldability. The steel exhibits good cold forming properties and can be readily welded using conventional techniques without preheating requirements for most applications.
Heat Treatment Options
MetalZenith offers various heat treatment options including stress relieving at 550-650°C, normalizing at 850-950°C, and annealing at 680-720°C to optimize mechanical properties for specific applications. Our controlled atmosphere furnaces ensure consistent results and minimal surface oxidation.
Manufacturing Process
Our GB Q235 steel is produced through electric arc furnace melting followed by ladle refining for precise chemistry control. Continuous casting ensures homogeneous structure, while controlled rolling and cooling processes optimize grain size and mechanical properties. Advanced quality control includes real-time chemical analysis and comprehensive mechanical testing.
Quality Standards & Certifications
MetalZenith maintains strict adherence to GB/T 700 standards and ISO 9001:2015 quality management systems. All products undergo rigorous testing including chemical analysis, tensile testing, impact testing, and dimensional verification. Material test certificates and third-party inspection services are available upon request.
Welding & Fabrication Guidelines
GB Q235 exhibits excellent weldability with most common welding processes including SMAW, GMAW, GTAW, and SAW. Preheating is typically not required for sections up to 25mm thickness. Post-weld stress relief may be beneficial for critical applications or heavy sections to minimize residual stresses and improve dimensional stability.
🧪 Chemical Composition
| Elemen | Konten (%) | Spesifikasi |
|---|---|---|
| Karbon (C) | ≤ 0.22 | GB/T 700 |
| Mangan (Mn) | 0.30 - 0.70 | GB/T 700 |
| Silikon (Si) | ≤ 0.35 | GB/T 700 |
| Fosfor (P) | ≤ 0.045 | GB/T 700 |
| Belerang (S) | ≤ 0.050 | GB/T 700 |
| Krom (Cr) | ≤ 0.30 | Residual |
| Nikel (Ni) | ≤ 0.30 | Residual |
| Tembaga (Cu) | ≤ 0.25 | Residual |
⚙️ Mechanical Properties
| Properti | Nilai | Standar Uji |
|---|---|---|
| Kekuatan Tarik | 375-500 MPa | GB/T 228.1 |
| Kekuatan Luluh | ≥ 235 MPa | GB/T 228.1 |
| Panjang Regangan (A50) | ≥ 26% | GB/T 228.1 |
| Panjang Regangan (A80) | ≥ 23% | GB/T 228.1 |
| Kekerasan Brinell (HB) | 105-140 | GB/T 231.1 |
| Energi Impak (KV2, 20°C) | ≥ 27 J | GB/T 229 |
| Modulus Young | 200-210 GPa | ASTM E111 |
| Batas Kelelahan (10^7 siklus) | 180-200 MPa | GB/T 4337 |
🔬 Physical Properties
| Properti | Nilai | Suhu/Kondisi |
|---|---|---|
| Kepadatan | 7.85 g/cm³ | 20°C |
| Titik Leleh | 1510°C | Solidus |
| Konduktivitas Termal | 54 W/m·K | 20°C |
| Koefisien Ekspansi Termal | 12×10-6/K | 20-100°C |
| Kapasitas Panas Spesifik | 500 J/kg·K | 20°C |
| Resistivitas Listrik | 0.16 µΩ·m | 20°C |
| Permeabilitas Magnetik | Ferromagnetik | Suhu Ruang |
| Suhu Curie | 770°C | Transisi Magnetik |
📏 Product Specifications
| Spesifikasi | Opsi Tersedia | Standar |
|---|---|---|
| Bentuk Produk | Pelat, Lembaran, Batang, Balok, Saluran, Sudut, Tabung, Pipa | GB/T 700, GB/T 3274 |
| Ketebalan Pelat | 6-200 mm | GB/T 3274 |
| Ketebalan Lembaran | 0.5-6 mm | GB/T 912 |
| Diameter Batang | 6-300 mm | GB/T 702 |
| Diameter Luar Tabung | 10-600 mm | GB/T 8162 |
| Penyelesaian Permukaan | Dibuat Panas, Dibuat Dingin, Diasamkan, Dikenakan Galvanis | GB/T 3274, GB/T 2518 |
| Toleransi Dimensi | ±0.1-0.5 mm (tergantung ketebalan) | GB/T 709 |
| Opsi Panjang | Standar: 6m, 9m, 12m; panjang kustom tersedia | Spesifikasi Pelanggan |
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Our Advantages in Processing GB Q235
Teknologi Tungku Busur Listrik Lanjutan
MetalZenith menggunakan teknologi tungku busur listrik mutakhir dengan kontrol suhu yang tepat dan sistem pengisian otomatis, memastikan konsistensi komposisi kimia yang optimal dan kandungan kotoran yang minimal dalam setiap proses produksi baja GB Q235.
Sistem Pengendalian Kualitas yang Komprehensif
Sistem manajemen kualitas terintegrasi kami dilengkapi dengan analisis kimia waktu nyata, pengujian mekanis otomatis, dan kemampuan pemeriksaan non-destruktif yang canggih, menjamin bahwa setiap produk GB Q235 memenuhi atau melebihi standar internasional dengan dokumentasi jejak penuh.
Kustomisasi Fleksibel & Pasokan Global
MetalZenith menawarkan opsi kustomisasi yang luas untuk baja GB Q235 termasuk berbagai bentuk, dimensi, dan perlakuan permukaan, didukung oleh jaringan logistik global kami dan lokasi gudang strategis untuk pengiriman dan dukungan teknis yang efisien di seluruh dunia.
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