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Specifications T30407 Data sheet, T30407 Chemical, T30407 Properties forgings bar. Technical specifications - From Melting, ESR & VAR technique, Blooming, Hot forging, Hot rolling, Heat treat, Straightening, 100% Ultrasonic test ASTM E2375 /SAE AMS 2154 /SEP 1923 /GB/T 4162 /EN 10228-3.
Official Test Certification: issued by TUV - SGS BV

TECHNICAL MATERIAL DATASHEET - T30407
MATERIAL CATEGORY - high content of carbon and chromium cold work tool steel
HS CODE - 72284000 / 72285000
MATERIAL SPECIFICATIONS - ASTM A681 -2004
CHEMICAL COMPOSITION (WEIGHT - %)
C (%):     2.15 ~ 2.50
Si (%):     0.30 ~ 0.50
Mn (%):   0.30 ~ 0.50

P (%)≤:   0.030
S (%)≤:   0.030
Cr (%):    11.5 ~ 13.5
Mo (%):   0.70 ~ 1.20
W (%):    -
V (%):     3.80 ~ 4.40
HEAT TREATMENT PRACTICE AND HARDNESS
Hot working tenperature ℃ /Starting: 1120 ~ 1160
Hot working tenperature ℃ /Ending: 980
Annealing temperature ℃: 870 ~ 900
Hardness after annealing ≤HBW: 235 ~ 262
Quenching temperature ℃: 1010 ~ 1070
Cooling medium: air cooled
Tempering temperature ℃: 150~540
Hardness value after tempered /HRC: 65 ~ 58

MELTING PROCESS 
This alloy is generally smelt in electric arc furnace  (EAF ) or IFF + VD, LF + Electroslag remelting (ESR).
For a purpose of higher quality, it should be smelt via technology of vacuum refining.
TYPICAL APPLICATIONS
Alloy tool steel is widely used to produce the cutting tool, cold/heat distortion mould and measuring implements,
and further to manufacture the piston, valve, valve seat of fuel pump of diesel engine.
Cutting tools
Mechanical parts 
Air hammer tools
Piercing tools
HEAT TREATTMENT PRACTICE
The preheating of measuring and cutting
tool steel is spheroidizing annealing, final heat treatment is quenching + low temperature tempering and hardness after heat treatment can reach 60~65HRC. When heat treat tool steel grades consideration should be given to hardening temperature, including ratio of heating, cooling and soaking times which will differ due to factors such as the shape and size of each chemical component. Other considerations during heat treatment include the type of furnace, quenching medium and work piece transfer facilities.
PROFILE & DIMENSIONS
Round bar / Wire rod (Diameter): 5.5mm to 500mm
Square bar / Flat bar: 3mm to 600mm
Length: Fixed length or random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T6 - 400mm X W10 - 1000mm X L1000-12000mm
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM. 
TECHNICAL SALES ASSISTANCE & SERVICE
If you meet further on any technical enquiry, pleased to EMAIL our resident team of qualified production engineers, Emails us: sales@ccsteels.com.

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