
فولاذ الأدوات 5Cr3Mn1SiMo1V
AOBO STEEL – مورد عالمي موثوق لأدوات الفولاذ
5Cr3Mn1SiMo1V is a grade under the Chinese GB standard, representing a high-toughness, impact-resistant tool steel. Its equivalent steels include AISI/ASTM س7 in the United States and DIN W-Nr. 1.2355 in Germany.
1. Chemical Composition(GB/ 1299-2000)
ج | سي | من | كر | شهر | الخامس | ص | س |
0.45-0.55% | 0.20-1.00% | 0.20-0.90% | 3.00-3.50% | 1.30-1.80% | ≤0.35% | ≤0.030% | ≤0.030% |
2. 5Cr3Mn1SiMo1V Steel Forging Process Specification
غرض | درجة حرارة التسخين (°م) | Initial Forging Temp (°C) | Final Forging Temp (°C) | طريقة التبريد |
سبيكة فولاذية | 1120 – 1150 | 1150 – 1200 | 900 | التبريد البطيء |
سبائك الصلب | 1150 – 1200 | 1000 – 1150 | 850 | التبريد البطيء |
3. 5Cr3Mn1SiMo1V Steel Heat Treatment Process Specification
3.1 التسخين المسبق
خطة المعالجة الحرارية الأولية | معلمات العملية |
التلدين المتساوي الحرارة بعد التشكيل | Heating Temp: 800-820°C, Soak: 2-3h, Isothermal Temp: 700-720°C, Soak: 3-5h, furnace cool to 550°C then air cool, Hardness after annealing ≤229 HBW |
التلدين العام بعد التشكيل | Heating Temp: 800-820°C, Soak: 2-3h, furnace cool to 550°C then air cool, Hardness after annealing ≤229 HRC |
3.2 Quenching and Tempering
مواصفات التبريد | مواصفات التلطيف | |||
Quenching Temp (°C) | طريقة التبريد | صلابة HRC | درجة حرارة التقسية (درجة مئوية) | صلابة HRC |
940 – 955 | التبريد بالهواء أو الزيت | 56 | 160 – 180 | 56 – 58 |
4. Mechanical Properties of 5Cr3Mn1SiMo1V
5Cr3Mn1SiMo1V steel is a high-impact-resistant tool steel. Its elevated chromium content enhances hardenability. Silicon and manganese improve strength and resistance to tempering. Molybdenum and vanadium refine the grain structure, further increasing hardenability and elevating the steel’s overall performance. Additionally, with a chromium content exceeding 2.5% by mass, this steel exhibits excellent resistance to hydrogen embrittlement and oxidation at moderate temperatures.
5. التطبيقات
5Cr3Mn1SiMo1V steel exhibits high toughness and moderate oxidation resistance at elevated temperatures, making it suitable for manufacturing tools and dies that operate under high impact loads. It is also well-suited for producing hammer forging dies and similar applications.


Get a Competitive Quote for 5Cr3Mn1SiMo1V Tool Steel
With over 20 years of forging expertise, Aobo Steel is your trusted partner for high-performance 5Cr3Mn1SiMo1V tool steel. We provide not just materials, but solutions. Leverage our deep industry knowledge and reliable supply chain for your project’s success.
✉ تواصل معنا عن طريق ملء النموذج أدناه.