Alloy Steel Plates, Brand Name : GSL

We are offering Alloy Steel Plates.
Technical conditions for alloy steel plates of 25CrMo4
1. Scope
The technical conditions apply to plates of 25CrMo4 with thickness not more than 100mm. (10mm-100mm)
2. Adopt standard:
EN10083-3 Steel for quenching and tempering part 3: Technical delivery conditions for alloy steels
3. Dimension, Shape, Weight and Permissible Deviation
The dimension, shape, weight and permissible deviation shall meet the requirements of EN10029.
4. Technical conditions
4.1 Chemical composition (Ladle analysis)
The chemical composition of plates shall be accordance with the following table 1.
Table 1 Chemical composition (Ladle analysis)
C Si Mn P S Mo Cr
0.22- 0.29 Max 0.40 0.60- 0.95 Max 0.035 Max 0.025 0.15- 0.25 0.90- 1.20
4.2 Mechanical properties
The mechanical properties of 25CrMo4 shall meet the requirement as table 2.
Table 2 Tensile properties
Thickness mm Yield strength MPa Tensile strength MPa +20 C Akv (J)
Transverse Elongation % Hardness Test HBW
21-60 Min 600 800-950 Min 35J Min 12 Max 240
61-100 Min 550 800-950 Min 35J Min 12 Max 240
4.3 Surface quality
The surface quality of plates shall be accordance with EN10163-2.
4.4 Ultrasonic inspection
Plates shall be ultrasonic inspected per EN10160-1999 S2E2.
4.5 Test method and inspection rules
Test items, sampling quantity, sampling method and test method shall conform to table 4.
Table 4 Test items for plates
No. Test item Quantity, Piece Sampling method Test method
1 Chemical composition (Ladle analysis) 1 (per batch furnace number) EN10083-3 EN10083-3
2 Tensile test 1 (Rolled pc) EN10083-1 EN10083-1
3 Impact test at +20C 3 (Rolled pc) EN10083-1 EN10083-1
4 Hardness test 1 (Product pc) EN10083-1 EN10083-1
5 Ultrasonic test Each product pc EN10160 EN10160