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| 4Cr5MoSiV|JIS SKD6|DIN 1.2343|BS BH11|ASTM H11 |
  
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牌號 Grade 4Cr5MoSiV | JIS SKD6 | DIN 1.2343 | BS BH11 | ASTM H11
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GB |
DIN |
W-Nr. |
AISI |
JIS |
BS |
EN |
|
4Cr5MoSiV |
|
1.2343 |
H11 |
SKD6 |
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執(zhí)行標準 Standard GB/T1299-2014
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尺寸、外形、允許偏差 Size , shape ,tolerance
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狀態(tài) condition |
公差 tolerance |
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磨皮 grinding surface |
-0/+5mm |
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車削 machined surface |
-0/+3mm |
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自由長度 free length |
4-6m |
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定尺長度 fixed length |
-0/+50mm |
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超長 over long |
7-23m |
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彎曲度 straightness |
≦3mm/m, 總彎曲度total straightness length ≦ total length總長度0.5% |
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不圓度 ovality |
不大于公稱直徑公差的0.7倍 Not greater than 0.7 times the nominal diameter tolerance |
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鍛材生產(chǎn)直徑范圍forged bar dia range |
140-600mm |
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冶煉方法 smelting process
電弧爐+爐外精煉+真空脫氣冶煉，下注鋼錠，電渣重熔需在合同中注明 EAF+LF+VD bottom pour ingot, ESR need indicate in contract
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交貨狀態(tài) delivery condition
退火磨氧化皮、車光、正火、調(diào)質(zhì)，交貨狀態(tài)需合同注明 annealed grinding surface. If need machining, normalizing or Q&T need
indicate in contract
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化學成份 chemical composition
|
Grade |
C |
Mn |
P |
S |
Si |
Cr |
V |
Mo |
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H11/T20811 |
0.35 |
0.45 |
0.20 |
0.60 |
0.03 |
0.03 |
0.80 |
1.25 |
4.75 |
5.50 |
0.30 |
0.60 |
1.10 |
1.60 |
1.2343/
X37CrMoV5-1 |
0.28 |
0.35 |
0.10 |
0.40 |
… |
… |
0.80 |
1.20 |
2.70 |
3.20 |
0.40 |
0.70 |
1.10 |
1.50 |
|
SKD6 |
0.32 |
0.42 |
… |
0.50 |
0.03 |
0.03 |
0.80 |
1.20 |
4.50 |
5.50 |
0.30 |
0.50 |
1.00 |
1.50 |
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BH11 |
0.32 |
0.40 |
… |
0.40 |
0.35 |
0.35 |
0.85 |
1.15 |
4.75 |
5.25 |
0.30 |
0.50 |
1.25 |
1.75 |
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4Cr5MoSiV |
0.33 |
0.43 |
0.2 |
0.5 |
0.02 |
0.02 |
0.8 |
1.2 |
4.75 |
5.5 |
0.3 |
0.6 |
1.1 |
1.6 |
其他元素檢測需要合同注明 other elements test result need indicate in contract.
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交貨硬度 hardness
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牌號grade |
退火狀態(tài)交貨硬度 annealing condition hardness HBW ≦ |
試樣淬火硬度test specimen hardness after Q&T |
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淬火溫度Q&T ℃ |
冷卻劑cooling agent |
洛氏硬度HRC ≧ |
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H11 |
229 |
790±15℃ preheat 1020±6℃ heating, keep 5-15”,oil cooling ,550±6℃ tempering 2 hour |
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低倍組織 酸浸低倍試片上不得有目視可見的縮孔、夾雜、分層、裂紋、氣泡和白點。Macrostructure No visible shrinkage, inclusion, delamination,
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cracks, bubbles or white spots should be observed on the acid – soaked sample piece
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鋼材直徑diameter mm |
1組 group |
2組 group |
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中心疏松 center porosity |
錠型偏析segregation |
中心疏松center porosity |
錠型偏析segregation |
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級，不大于 class ≦ |
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≦80 |
2.0 |
2.0 |
3.0 |
3.0 |
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>80-150 |
2.5 |
3.0 |
3.5 |
3.0 |
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>150-250 |
3.0 |
3.0 |
4.0 |
4.0 |
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>250-400 |
3.5 |
3.0 |
4.5 |
4.0 |
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>400 |
協(xié)商 Negotiate |
電渣鋼合格級別供需雙方協(xié)議 ESR steel qualified level need negotiate.
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顯微組織 microstructure
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珠光體組織 合格級別1-5級，熱壓力加工用鋼不檢測 pearlite 1-5 class
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網(wǎng)狀碳化物 直徑不大于60MM合格級別不大于3級 carbide network ≦ 3 class
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共晶碳化物不均勻度（冷作模具鋼檢測）Eutectic carbide inhomogeneity
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鋼材直徑diameter MM |
共晶碳化物不均勻度合格級別Eutectic carbide inhomogeneity qualified level |
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1組group |
2組 group |
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級，不大于 class ≦ |
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>120-400 |
6 |
協(xié)議Negotiate |
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>400 |
協(xié)議Negotiate |
協(xié)議Negotiate |
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非金屬夾雜物 nonmetallic inclusion
電渣鋼結果符合1組，真空脫氣鋼符合2組 ESR steel conform to 1 group , VD steel conform to 2 group
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非金屬夾雜物類別nonmetallic inclusion type |
1組 group |
2組 group |
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細系thin series |
粗系heavy series |
細系thin series |
粗系heavy series |
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級，不大于 class ≦ |
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A |
1.5 |
1.5 |
2.5 |
2.0 |
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B |
1.5 |
1.5 |
2.5 |
2.0 |
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C |
1.0 |
1.0 |
1.5 |
1.5 |
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D |
2.0 |
1.5 |
2.5 |
2.0 |
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脫碳層 decarburized layer
脫碳層深度不大于0.25+1%D,直徑大于150mm雙方協(xié)議 decarburized layer depth not greater than 0.25+1%D, diameter over 150mm negotiate.
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超聲檢測 UT test
執(zhí)行標準GB/T6402-2008,常規(guī)規(guī)格執(zhí)行D/d級，直徑400以上雙方協(xié)議，鋼材內(nèi)部不允許有白點、夾渣、分層、內(nèi)裂、縮孔等冶金缺陷 standard as per
GB/T6402-2008 /SEP1921 C/c or D/d class. No white spot, slag inclusion, delamination, cracking, shrinkage and other metallurgical defects
are allowed inside the steel
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缺陷尺寸級別 defect size level |
單個缺陷平底孔直徑single FBH mm |
連續(xù)缺陷平底孔直徑continuous FBH mm |
連續(xù)缺陷最大長度continuous FBH length mm |
|
C |
7 |
5 |
40 |
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D |
5 |
3 |
30 |
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E |
3 |
2 |
30 |
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缺陷數(shù)量級別defect qty level |
單個缺陷數(shù)量single FBH QTY |
連續(xù)缺陷數(shù)量continuous FBH QTY |
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個數(shù)，不大于 number ≯ |
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c |
8 |
4 |
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d |
4 |
2 |
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e |
2 |
1 |
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表面質(zhì)量 surface quality
鍛材表面沒有目視可見的裂紋、折疊、結疤和夾雜，如有上述缺陷就清除，深度不大于截面尺寸4%，清除寬度不小于深度的5倍，There are no visible
cracks, folds, scars or inclusions on the surface. If there are any of the above defects, they should be removed with a depth not greater than
4% of the section size and a width not less than 5 times of the depth.
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特殊要求 special requirements
超出標準約定范圍的供需雙方協(xié)議 The buyer and the seller negotiate beyond the agreed scope of the standard
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起訂量 常規(guī)生產(chǎn)牌號交貨期30天 MOQ :the grade regular MOQ 10tons , No stock book order 30 days delivery time.
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特點及用途 features and applications: 是一種含5%鉻的熱加工工具鋼，具有優(yōu)異的沖擊韌性。根據(jù)美國鋼鐵協(xié)會的分類系統(tǒng)，
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鉻熱工工具鋼被指定為H組鋼，并在ASTM a681標準中指定。最常用的鉻熱加工鋼是H11工具鋼，h12工具鋼和H13鋼，在H1到H19的系列。H11
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工具鋼是一種深硬化、空氣硬化鋼，H11合金鋼可通過熱處理和空氣淬火進行深硬化。這使得在熱處理過程中最小的尺寸變化。也有超抗熱疲勞裂
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紋和卓越的抗粗裂紋和熱沖擊在水冷時。AISI H11 tool steel is a 5% chromium hot work tool steel that is represented by its excellent impact toughness.
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Chromium hot-work tool steels are designated as group H steels according to the AISI classification system, and specified in ASTM A681standard.
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The most commonly used chromium hot-work steels are H11 tool steel, h12 tool steel, and H13 steel, within the series from H1 to H19. H11 tool steel
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is a deep-hardening, air-hardening steel and H11 alloy steel could be deep hardened by heat treatment and air-quenching. That gives minimal size
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change during heat treatment. H11 hot work steel also has super resistance to thermal fatigue cracking and superb resistance to gross cracking and
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thermal shock when water cooled in service.
優(yōu)勢 advantage
工藝成熟，煉鋼采用氣體保護澆注，快鍛機開坯，徑鍛機成材并球化退火，鍛造頻率高恒溫鍛造有利于消除沿晶界分布的網(wǎng)狀碳化物.在1000℃余溫水淬超細化處
理，組織到AS3.用戶要求化學成份C, Mo, V P＜0.020 S＜0.010 O≦2.0 H≦2.0ppm及組織級別都可以控制.圓棒長度可達25米，圓餅直徑可達1.2米，鍛管外徑可達
650mm.Pouring by gas protected , blooming by fast forging machine, forming by radial forging machine and spheroidize annealing, forging with high frequency
and constant temperature is helpful to eliminate the reticulated carbides distributed along the grain boundary. We all do superfine treatment at 1000℃ lingering
warmth, structure ≦3 class. If customer need control chemical composition , gas or impact also can do , P＜0.020 S＜0.010 O≦2.0 H≦2.0ppm. Round
bar length up to 25m, discs diameter up to 1.2m, forged tube diameter up to 650mm.
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