فولاد آلیاژی 3312
فروش فولاد آلیاژی 3312
مرکز پخش فولاد آلیاژی 3312
Typical Analysis |
C |
Mn |
P |
S |
Si |
Ni |
Cr |
.11 |
.47 |
.010 |
.002 |
.27 |
3.33 |
1.47 |
|
Characteristics |
- High alloy carburizing grade for those heavy-duty applications requiring high core strength, toughness and fatigue resistance over and above the widely used AISI 8620. Core strengths in the order of 170,000 psi (1172 N/mm2) are attainable. It is the preferred grade for carburized parts in severe operating conditions with excellent low-temperature properties. 3312 may also be used in the heat treated, non-carburized condition for many applications requiring extra strength and toughness. It is normally supplied in the annealed condition and hardness HB 212 would be typical.
|
Typical Applications |
- Heavy-duty gears, pinions, spline shafts, piston pins, transmission components, rock drilling bit bodies, plastic molds, etc.
|
Typical Heat Treatment |
- Forging
- Commence 1215℃ max.
- Finish 925℃ Bury in Mica.
- Annealing
- Normalizing
- Hardened & Tempered (Uncarburized) – Heat to 815℃/ 840℃ and oil quench or Heat to 840℃/ 870℃ and air quench, then temper at 200℃/ 650℃ according to properties required.
- Case Hardening – single refining treatment. After carburizing at 900℃/ 925℃, cool to RT. Reheat to 775℃/ 800℃, oil quench and temper at 200℃.
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Mechanical Properties |
- Typical as supplied, Annealed.
- Tensile Strength – 102,000 psi
- 2Tensile Strength – 704 N/mm
- Yield Strength – 80,000 psi
- 2Yield Strength – 552 N/mm
- Elongation – 24%
- Reduction of Area – 65%
- Hardness – HB 212
- Machinability – 40
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