C
≤ |
Si
≤ |
Mn
≤ |
P
≤ |
S
≤ |
Cr |
Ni |
|
0.15 |
0.35 |
0.30-0.80 |
0.020 |
0.010 |
|
3.25-3.75 |
|
Mo |
Al |
Cu |
Nb |
Ti |
V |
Ce |
|
|
|
|
|
|
≤0.05 |
|
|
N |
Co |
Pb |
B |
Other |
|
|
|
|
|
|
|
Cr+Ni+Mo ≤0.50% |
|
|
|
|
|
|
|
|
|
|
German DIN of low-temperature steel GangHao and chemical composition
Material name: ensure that its quench-hardening ability structural steel grades: 20 MnTiBHA standard GB/T 5216-1985 "chemical ingredients: carbon C: 0.17 ~ 0.23 Si Si: 0.17 ~ 0.37 Mn Mn: 1.20 ~ 1.55 sulfur S: allow residual content than 0.030 P P: allow residual content than 0.030 chromium Cr: allow residual content than 0.035 Ni Ni: allow residual content than 0.030 copper Cu: allow residual content than 0.025 titanium Ti: 0.04 ~ 0.10 B B: 0.0005 ~ 0.0035" mechanical properties: impact toughness values α kv (J/cm2) : frequency 69 (7) hardness: annealing or high temperature tempering, than 187 HB, diameter of 4.4 mm creasing quartile sample size: sample blank dimensions for 15 mm standard and metallographic organization "heat treatment, heat treatment specification: is fire, 930 ~ 950 ℃, air cold; Quenching, 860 + 20 ℃, oil cold; Tempering, 200 + 20 ℃, air or water. "Delivery status: rolling or forging system state delivery. According to buyer's request can also heat treatment (is fire, annealed or high temperature tempering) state delivery. Delivery status should be indicated in the contract.
th: We can supply any lenth based on the customer's requirement.
Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes
Tubings: OD: φ4-410 mm, with wall thickness ranging from 1-35 mm.
Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement
Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement
Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.
Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirement
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Mechanical properties
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Heat treatment
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Welding performance
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