Carbon Steel Seamless Pipe For Automobile Half-Axle Sleeve
Product Description: The seamless steel pipe for automobile half-shaft casing is mainly used to protect the transmission shaft. The two ends of the half-shaft casing are fixed on the bracket, and the transmission shaft passes through the half-shaft casing to protect the transmission shaft. According to domestic market surveys, the annual consumption of half-shaft sleeves in the national automobile industry is about 15,000 tons. With the further development of the automobile industry, the market demand for half-shaft sleeves has great growth potential. The main materials for automobile half-shaft casing are 45#, 45Mn2, 40MnB, 40Cr, 25MnCr, and the product standard is YB/T5035-1996.
Standard for Automotive Axle Tubes:
Aspect | Description |
---|---|
Standard | SAE J604, ISO 4468, DIN 738, GB/T 3059, etc. (varies by region and application) |
Grade | Common grades include SAE 1045, SAE 4340, EN 42CrMo4, etc. |
Application | Used for manufacturing drive shafts and axle shafts in vehicles |
Grades of Automotive Axle Tubes:
Grade | Typical Applications |
---|---|
SAE 1045 | General-purpose axles with moderate strength requirements |
SAE 4340 | High-strength axles for performance and heavy-duty vehicles |
EN 42CrMo4 | Alloy steel for enhanced toughness and wear resistance |
Chemical Composition:
Element | SAE 1045 | SAE 4340 | EN 42CrMo4 |
---|---|---|---|
Carbon (C) | 0.42-0.50% | 0.38-0.43% | 0.38-0.45% |
Manganese (Mn) | 0.50-0.80% | 0.70-0.90% | 0.90-1.20% |
Silicon (Si) | ≤0.40% | ≤0.40% | ≤0.40% |
Phosphorus (P) | ≤0.035% | ≤0.035% | ≤0.035% |
Sulfur (S) | ≤0.035% | ≤0.030% | ≤0.035% |
Chromium (Cr) | - | - | 0.90-1.20% |
Molybdenum (Mo) | - | - | 0.15-0.25% |
Mechanical Properties:
Property | SAE 1045 | SAE 4340 | EN 42CrMo4 |
---|---|---|---|
Tensile Strength (MPa) | 440-590 | 860-1100 | 980-1180 |
Yield Strength (MPa) | 310-440 | 785-965 | 835-1080 |
Elongation (%) | ≥12 (for most products) | ≥10 (for most products) | ≥12 (for most products) |
Hardness (HB) | 120-170 (annealed condition) | 200-280 (normalized condition) | 200-250 (quenched and tempered) |
Product Applications: