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T30107

2018-04-14 20:39:28
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Steel Grade: ASTM A7| UNS: T30107

CHEMICAL COMPOSITION(T30107): 
C(%) :         2.00~2.85
Si(%) :         0.10~0.50
Mn(%) :         0.20~0.80
P(%)≤:         0.03
S(%)②:         0.03
Cr(%) :         5.00~5.75
Mo(%) :         0.90~1.40
V(%) :         3.90~5.15
W(%) :         0.50~1.50
Other①:         —
HARDNESS AND HEAT TREATMENT (T30107):
Hardness HBS|After Annealing:         269
Hardness HBS|After Cold Drawing:         285
Preheating Temperature/℃:         816
Quenching/℃|Salt-bath Furnace:         954
Quenching/℃|Controlled Atmosphere Furnace:         968
Holding Time/min:         5~15
Quenching Medium:         Air Cooling
Tempering/℃:        204
Hardness≥HRC|After Tempering:        63
Remark(T30107): 
①, Residual elements content: Ni+Cu≤0.75%.
②, A,D,H series to improve machinability, sulfur content can be increased to ω(S)0.06%~0.15%.
③, Increase the H13 sulfur, the upper limit of manganese content can reach ω(Mn)1.00%.
④, It also have Al which is ω(Al)1.05%~1.25%.
⑤, P20 and P21 usually to pre hardened state supplies.
⑥, After tempering hardness L2 refers to the hardness of ω(C)0.45%~0.55%.
⑦, It standard is ASTM A681-1999.
Please find the PDF for T30107  
Introduction Alloy Tool Steel (T30107)
Alloy tool steel, carbon tool steel with Si, Mn, Ni, Cr, Mo, V, W and other alloy elements in order to improve the hardenability and toughness, wear resistance and heat resistance of steel.Add Cr and Mn can improve the hardenability of tool steel, according to the requirements, selectively to join or add other elements (adding amount is generally not more than 5%), that is, to form a series of alloy tool steel.It is mainly used in the manufacture of measuring tools and cutters, shock resistant and cold and hot mould and some special purpose tools.


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