TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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GB/T 3077 30CRMO ALLOY STEEL PLATE
GB/T 3077 30CRMO alloy steel plate has high strength and toughness, high hardenability, and the critical hardenability diameter in oil is 15～70mm; The thermal strength of steel is also good, and it has sufficient high temperature strength below 500℃, but its hardenability at 550℃ The intensity drops significantly.
When the alloy element is at the lower limit, the welding is quite good, but when it is close to the upper limit, the weldability is medium, and it needs to be preheated to above 175℃ before welding. GB/T 3077 30CRMO alloy steel plate has good machinability and medium plasticity during cold deformation; heat treatment at 300～350℃ The range has the first type of temper brittleness; there is a tendency to form white spots.
GB/T 3077 30CRMO alloy steel plate chemical composition
| Grade | C | Si | Mn | Cr | Mo |
| GB/T 3077 30CRMO | 0.26-0.34 | 0.17-0.37 | 0.4-0.7 | 0.8-1.1 | 0.15-0.25 |
GB/T 3077 30CRMO alloy steel plate mechanical properties
| Grade | Tensile strength | Yield strength | Reduction % | Elongation A% |
| GB/T 3077 30CRMO | 440 | 295 | 60 | 22 |
Product Pictures:
Company Introduction:
Packing and Delivery:
Quality Control:
1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking.
FAQ:
A: A professional steel pipes materials inventor, manufacturer and solution provider
A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us
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