東北特鋼20crni3A圓棒（20鉻鎳3）

20CrNi3A淬透性良好，能在大的截面范圍內(nèi)獲得均勻的強(qiáng)度。經(jīng)調(diào)質(zhì)或淬火加低溫回火后，有良好的綜合力學(xué)性能。切削加工性良好，冷變形塑性和焊接性中等。有形成白點(diǎn)的敏感性，高溫回火時(shí)有回火脆性傾向。20CrNi3A用作高負(fù)荷條件下工作的齒輪、軸、蝸桿及螺栓、銷釘?shù)?

●力學(xué)性能：
條件屈服強(qiáng)度 σ0.2 (MPa)：≥835
斷面收縮率 ψ (%)：≥55
沖擊韌性值 αku (J/cm2)：≥98
硬度 ：341～292HB

熱處理規(guī)范：820～840℃油或溫水淬火+400～500℃回火,油或水冷。
金相組織：1)調(diào)質(zhì)處理:回火索氏體;2)滲碳后經(jīng)淬火、低溫回火:回火馬氏體

20CrNi3A quenching is good, and can obtain the uniform intensity in the large section. After quenching and tempering, there is good comprehensive mechanical properties. Cutting process is good, cold deformation plasticity and welding medium. The formation of white sensitivity, high temperature tempering tempering brittleness. 20CrNi3A used as a high load working condition of gear, shaft, worm and bolt, pin etc.
- Mechanical properties:
Conditional yield strength (MPa = 835): 0.2
Section shrinkage (%): 55 PSI
The impact toughness value of alpha Ku (J/cm2): 98
Hardness:341 ~ 292HB
Heat treatment specification: 820 ~ 840 for oil or warm water quenching +400 ~ 500, oil or water.
Metallographic structure: 1) the quenching and tempering treatment: after the tempering of the rope's body; 2), after quenching, low temperature tempering: tempering martensite

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分析師認(rèn)為，部分鋼廠采取限價(jià)措施，主要是為了穩(wěn)定市場(chǎng)，但這種限價(jià)措施不會(huì)對(duì)市場(chǎng)有太大的影響。

“目前經(jīng)銷商也想漲價(jià)，但漲價(jià)之后他們的貨銷售不出去，在供大于求的情況下沒有經(jīng)銷商愿意囤貨。限價(jià)措施只能在短期內(nèi)穩(wěn)定價(jià)格，市場(chǎng)終究還是要回歸基本面。”分析師說。

光大期貨礦鋼研究員夏君彥表示，在鋼材市場(chǎng)“金九”旺季不旺、下游需求疲弱的情況下，限價(jià)措施實(shí)際效果不大。不過，鋼廠再度限價(jià)說明生產(chǎn)虧損比較嚴(yán)重，限價(jià)也是無奈之舉。

據(jù)了解，目前采取限價(jià)措施的主要是北方的一些鋼廠。“現(xiàn)在北京的鋼材價(jià)格太低了，鋼廠生產(chǎn)鋼材每噸要虧損150元。”夏君彥告訴記者。

多位行業(yè)人士在接受記者采訪時(shí)均表示，由于目前正處于第三季度末期，鋼企普遍面臨還貸壓力，資金狀況堪憂，對(duì)后期的市場(chǎng)也缺乏信心。

一位鋼鐵行業(yè)資深人士表示，國內(nèi)鋼鐵需求全面下滑才剛開始，制造業(yè)的“寒冬”將使國內(nèi)鋼鐵企業(yè)的日子更加難過。鋼企的資金狀況還會(huì)持續(xù)惡化，隨時(shí)可能出現(xiàn)大面積停產(chǎn)，這還會(huì)對(duì)鐵礦石需求造成沖擊。

Analysts believe that part of the steel mills to take the limit measures, mainly in order to stabilize the market, but this limit will not have a big impact on the market.
"At present, dealers also want to rise in price, but after the price of the goods they sell do not go out, under the situation of oversupply of no dealers willing to hoard goods. Limit price measures can only be in a short period of stable prices, the market will eventually return to the fundamentals." Analysts say.
Xia Junyan, said China Everbright futures steel researcher, in the steel market, Kim Gu season is not prosperous, weak downstream demand, the actual effect is not limited to the actual effect. However, the steel mills to limit the production of a more serious loss is more serious, the price is also helpless.
It is understood that the current price fixing measures are mainly some steel mills in the north. "Now Beijing's steel prices are too low, steel production of steel per ton to a loss of 150 yuan." Xia Junyan told reporters.
Many industry insiders said in an interview with reporters, due to the current is in the end of the third quarter, steel prices are generally faced with the pressure on the loan, the situation is worrying, the market is also a lack of confidence in the late.
A steel industry veteran said that the domestic steel demand has just begun to decline, the manufacturing industry's winter will make the domestic steel enterprises more difficult days. Steel prices will continue to deteriorate the situation of funds, at any time may occur in a large area, which will also impact on the demand for iron ore.