GB/T 3077 30CRMO ALLOY STEEL PLATE

GB/T 3077 30CRMO ALLOY STEEL PLATE

Product Overview:

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

GB/T 3077 30CRMO alloy steel plate mechanical properties

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.

100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.