江蘇蘇州供應(yīng)20CrNiMo圓鋼價(jià)格，銷售圓棒20CrNiMo材料多少錢一噸，上海、無錫20CrNiMo現(xiàn)貨供應(yīng)商報(bào)價(jià)，鋼材料20CrNiMo是什么材料？浙江哪里有賣20CrNiMo材質(zhì)鋼棒料，鍛件20CrNiMo鍛造圓鋼，電渣重熔20CrNiMo鋼錠鍛打料。東北特鋼、寶鋼、重特、大冶、進(jìn)口20CrNiMo代理商批發(fā)商報(bào)價(jià)格，冷拉光亮20CrNiMo銀亮材光圓。哪個(gè)鋼廠有生產(chǎn)20CrNiMo圓鋼材料？出廠價(jià)20CrNiMo生產(chǎn)廠家。國產(chǎn)/進(jìn)口20CrNiMo價(jià)格是多少？特鋼/合金鋼20CrNiMo化學(xué)成分、力學(xué)性能。

SNCM220、20crnimo、SAE8620H、aisi4340、SNCM439、40crni2mo、40crnimo、36crnimo4、

34crnimo6、17crnimo6、18crnimo7-6、36crnimo16、40crmov4-6、40crnimo6、45crnimov、18cr2ni4wA、

15crmn、20crmn、16mncr5、20mncr5、20crmnti、30crmnsi、35crmnsi、20crmnmo、40crmnmo、SCM440、

SNB16、12crmov、12cr1mov、35crmov、40CrMoV、25cr2mov、25cr2mo1v、38crmoal、21crmov5-7、

31crmov9、SACM645、41cralmo7、30crmnti、20crni、40crni、45~50crni、12crni2、12crni3、14nicr14

、14nicr10、SNC415、SNC815、20crni3、30crni3、SNC631、37crni3、SNC836、15nicr13、17cr2ni2mo、

12cr2ni4、20cr2ni4A、3316、3325、8640、4720、14nicr18、20crni2mo、sae4320、SNCM420、25cr2ni4wA

、SAE8720，20cr~40cr、12~15crmo、20crmo、30crmo、35crmo、40~42crmo，42crmo4、20crmo4、4140、

4118、4135、SCM415、SCM420、SCM430、SCM435等產(chǎn)品多樣，規(guī)格齊全，也可根據(jù)客戶具體要求加工各種型

材，質(zhì)優(yōu)價(jià)廉。產(chǎn)品涵蓋：板、棒、環(huán)、管、帶、絲、鍛件等。
并可根據(jù)客戶要求的化學(xué)成分訂做：鋼錠、圓鋼、型材、鍛件等！2噸起訂，脫氧除雜、吹氬、脫氣、攪拌

，電爐、精煉爐、電渣重熔等冶煉方式！保成分，保探傷！

20CrNiMo，是中國國家標(biāo)準(zhǔn)規(guī)定的一種合金結(jié)構(gòu)鋼的牌號。統(tǒng)一數(shù)字代號：A50202

銅 Cu：允許殘余含量≤0.30

交貨狀態(tài)：以熱處理（正火、退火或高溫回火）或不熱處理狀態(tài)交貨，交貨狀態(tài)應(yīng)在合同中注明。

20CrNiMo, a kind of alloy structural steel which is stipulated by the Chinese national standard. Unified digital code: A50202
Implementation of standard 3077-1999 GB/T
Use
20CrNiMo steel quenching through higher, no temper brittleness, welding is quite good, the formation of cold cracking tendency is small, cutting and cold strain plasticity is good. Generally used in the condition of quenching and tempering or carburizing quenching.
20CrNiMo AISI, former USA steel in SAE 8720 steel. The quenching performance is similar to 20CrNi steel. Although the Ni content in the steel is half of the 20CrNi steel, but due to the addition of a small amount of Mo, the Austenite Isothermal Transformation Diagram of upper shifted to the right; and because of the appropriate increase of Mn content, resulting in the steel quenching permeability is still very good strength than steel 20CrNi. Commonly used in gear manufacturing small cars, tractor engine and transmission system; can replace 12crni3 steel manufacturing requirements of heart, higher performance of carburizing, cyaniding pieces, such as oil drilling and metallurgical open pit mine roller bit tooth and claw and cone body. 20CrNiMo because of the addition of molybdenum has a good comprehensive performance, but also a certain temperature. Used in the manufacture of steam turbine rotor gear whole internal combustion engine connecting rod forging valve.
Chemical composition
Mass fraction (%):
Carbon:0.17 C ~ 0.23
Silicon Si:0.17 ~ 0.37
Mn Mn:0.60 ~ 0.95
S: allow residual sulfur content less than 0.035
P P: allow residual content less than 0.035
Chrome Cr:0.40 ~ 0.70
Nickel Ni:0.35 ~ 0.75
Mo Mo:0.20 ~ 0.30
Cu: allow residual copper content is less than 0.30
Mechanical properties
Heat treatment
Quenching heating temperature (c): 850
Tempering heating temperature (c): 200
The ultimate tensile strength of B (MPa): 980 (100)
Yield strength s (MPa): 785 (80)
5 elongation (%): 9
Section shrinkage (%): 40 psi
The impact of Akv (J): 47
The impact toughness value of alpha kV (J/cm2): 59 (6) (HBS100/3000) (Brinell hardness or high temperature tempering annealing state): less than 197
Delivery status: to heat treatment (normalizing, annealing or tempering) with or without heat treatment delivery, delivery status should be indicated in the contract.

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