Infos for DIWA353/ 13MnNiMo5-4 Steel Plate- TJC STEEL.

Technical Conditions for DIWA353/ 13MnNiMo5-4 Steel Plate:
1 Scope of Application for DIWA353/ 13MnNiMo5-4 Steel Plate:
The technical conditions are applicable to the supply technical requirements of steel plates with thickness range of >100mm ~ 145mm DIWA353 (13mnnimo5-4).[TJC STEEL]
2 Production Way:
Steel should be composed of electric furnace smelting, refining and vacuum degassing.
3 Technical Requirements for DIWA353/ 13MnNiMo5-4 Steel Plate:
3.1 Chemical Composition
The chemical composition of the steel plate should [TJC STEEL]meet the requirements of table 1, and the control of trace elements according to gb713-1997.
 
Table 1 Chemical Composition（%）
 
                          C-Si-Mn-P-S-Ni-Mo-Cr-Nb-Alt
Heat Analysis
≤0.15 0.10-0.50 1.00-1.60 ≤0.020 ≤0.004 0.60-1.00 0.20-0.40 0.20-0.40 0.005-0.020 ≥0.015
Product Analysis
≤0.17 0.05-0.56 0.95-1.70 ≤0.025 ≤0.005 0.55-1.05 0.15-0.45 0.15-0.45 0.005-0.025 ≥0.015

3.2 Delivery Statusfor DIWA353/ 13MnNiMo5-4 Steel Plate: Normalizing at 890 ~ 950℃ + Tempering at 620 ~ 680℃.
3.3 Allowable Deviations of Size, Shape and Quality
The allowable deviation of the size, shape and [TJC STEEL]quality of the steel plate shall conform to the requirements of EN10029, the thickness deviation shall conform to the requirements of class B, and the irregularity shall conform to the requirements of class N.
3.4 Test Plate Mechanics and Process Performance
3.4.1 Mechanical Properties:
The mechanical properties (transversal) [TJC STEEL]of the steel plate delivery state should meet the requirements in table 2
Table 2: Mechanical Properties of Steel Plate
 
Thickness/ mm-YIeld Strength Reh MPa,min-Tensile Strength RmMPa-Elongation %,min-Impact Test AKV(0℃)J,min-Bending Test 180° d=3a
>100 ≤125380 570～740 18 31 Pass

>125≤145 375

Note 1: The impact value listed in the table is the average value of 3 samples, and one impact value is allowed to be lower than the specified value, but not lower than 27J.
3.4.2 High temperature tensile performance [TJC STEEL]of steel plate in delivery state
The instantaneous tensile properties of steel plates at high temperature should meet the requirements in table 3.
Table 3: Transient Tensile Properties at High Temperature[TJC STEEL]
 
Thickness（mm）Temperature（℃）Rp0.2(MPa)Rm(MPa)
>100≤125 350 ≥324 ≥510

>125≤145 350 ≥314

3.5 Simulate Post Weld Heat Treatment
The performance data of steel plate simulating post-welding heat treatment are provided. The performance should meet the requirements of table 2. The post-welding heat treatment process is simulated: 600±10℃, the insulation is maintained for 7 hours, and then the temperature is reduced to 400℃ at a speed of less than 100℃/ hour.
3.6 Surface Quality
The surface quality of the steel plate shall comply with the requirements of en 10163-2 B2.
No cracks, bubbles, scars, folds or [TJC STEEL]inclusions shall be found on the surface of the steel plate.No layering is allowed inside the steel plate.If the above defects exist on the surface of the steel plate, clearance is allowed, [TJC STEEL]but the clearance depth shall not exceed half of the thickness tolerance from the actual size of the steel plate, but the minimum thickness shall be ensured, and the clearance site shall be smooth and transitional.Repair welding is not allowed without the buyer's consent.
3.7 Ultrasonic Inspection
Each plate to 100% ultrasonic testing, ultrasonic [TJC STEEL]testing according to the German SEL072 (072) steel supply technical conditions Ⅲ level testing and acceptance.[TJC STEEL]
 
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