Product List
Gangsteel Material Solution
Email: admin@gangsteel.com
Sales: jack@gangsteel.com
1. The technology conditions GB3077 -88 standard with reference to the provisions of applicable to is not more than 150 mm thick plate.
2. The size, shape, weight and allow deviation
The steel plate size and shape, weight and deviation should be allowed to meet the provisions of the GB709-88.
3. Technical requirements
3.1 the chemical composition of steel (melting analysis) should comply with the regulations of the GB3077-88 standard. See table 1.
Chart 1
|
steel grade |
C |
Si |
Mn |
Mo |
Cr |
P |
S |
|
20CrMo |
0.17~0.24 |
0.17~0.37 |
0.40~0.70 |
0.15~0.25 |
0.80~0.10 |
≤0.025 |
≤0.020 |
|
30CrMo |
0.26~0.34 |
0.17~0.37 |
0.40~0.70 |
0.15~0.25 |
0.80~0.10 |
≤0.025 |
≤0.020 |
|
35CrMo |
0.32~0.40 |
0.17~0.37 |
0.40~0.70 |
0.15~0.25 |
0.80~0.10 |
≤0.025 |
≤0.020 |
|
42CrMo |
0.38~0.45 |
0.17~0.37 |
0.50~0.80 |
0.15~0.25 |
0.90~1.20 |
≤0.025 |
≤0.020 |
|
20CrMnMo |
0.17~0.23 |
0.17~0.37 |
0.90~1.20 |
0.20~0.30 |
1.10~1.40 |
≤0.025 |
≤0.020 |
|
40CrMnMo |
0.37~0.45 |
0.17~0.37 |
0.90~1.20 |
0.20~0.30 |
0.90~1.20 |
≤0.025 |
≤0.020 |
|
20Mn2 |
0.17~0.24 |
0.17~0.37 |
1.40~1.80 |
/ |
/ |
≤0.025 |
≤0.020 |
|
40Mn2 |
0.37~0.44 |
0.17~0.37 |
1.40~1.80 |
/ |
/ |
≤0.025 |
≤0.020 |
|
45Mn2 |
0.42~0.49 |
0.17~0.37 |
1.40~1.80 |
/ |
/ |
≤0.025 |
≤0.020 |
3.2 delivery status: the annealing or high temperature firing back.
3.3 machinery and process performance
3.3.1 the annealing or high temperature tempering steel thick hardness index see table 2.
Chart 2
|
steel grade |
20CrMo |
30CrMo |
35CrMo |
42CrMo |
|
hardness（HB） |
≤197 |
≤229 |
≤229 |
≤217 |
|
steel grade |
20Mn2 |
40Mn2 |
45Mn2 |
|
|
hardness（HB） |
≤187 |
≤217 |
≤217 |
|
|
steel grade |
20CrMnMo |
40CrMnMo |
|
|
|
hardness（HB） |
≤217 |
≤217 |
|
|
3.4.2 provide sample after conditioning mechanical properties of σb, σs, the delta 5, normal temperature AKV.
EN10028-2 P355GH for High-Strength Low-Alloy Columbium-Vanadium Structural Steel EN10025-2 S355J2 Structural St
We export A240 304L Stainless Coil 2B, NO.1 No.4 surface, the thickness 0.1mm to 3mm, 3mm to 22mm, Mother mill
ASTM A516 GR 70 equivalent materials is such as ASME SA516 GR 70, EN 10028 P355GH, and BS1501 224-490 A & B, sh
The astm a516 gr 70 yield strength of 260 MPa ensures structural integrity in high-pressure applications, such
