STF7
2017-08-01 12:07:49 Origin： Remark：0 Click：
Material technical specifications of KS D3753 -2004 alloy tool steel STF7 data sheet, STF7 Chemical compositions,Gr STF7 Mechanical properties from Steelmaking, ESR melted, Blooming, Hot forging, Hot rolling, Heat treatment, Straightening, 100% Ultrasonic test, Cold working, Gr. STF7 Peeled or rough turned machining. Technical specification - KS D3753 -2004. 100% Ultrasonic test ASTM E2375 /SAE AMS 2154 /SEP 1923 /GB/T 4162 /EN 10228-3.
TECHNICAL DATA SHEET: KS STF7
MATERIAL CATEGORY: alloy tool steel
MATERIAL SPECIFICATIONS: KS D3753 - 2004
CHEMICAL COMPOSITIONS (WEIGHT - %)
C (％): 0.28 ~ 0.38
Si (％): ≤ 0.50
Mn (％): ≤ 0.60
P (％)≤: 0.030
S (％)≤: 0.025
Cr (%): 2.50 ~ 3.50
Mo (%): 2.50 ~ 3.00
W (%): -
V (%): 0.40 ~ 0.70
MECHANICAL PROPERTY AND HARDNESS
Annealing temperature /℃: 820 ~ 870
Annealed hardness, ≤ HB: 229
Quenching temperature /℃: 1000 ~ 1050
Cooling medium: air
Tempering temperature /℃: 550 ~ 600
Hardness under tempered condition ≥HRC: 53
Tempering temperature /℃: 550 ~ 600
Hardness under tempered condition ≥HRC: 53
MELTING PROCESS
This alloy is generally smelt in Electric Arc Furnace (EAF), EAF+LF+VD, LF + Electroslag remelting (ESR).
For a purpose of superior quality, it should be smelt via technology of vacuum refining or by agreement.
PRODUCT PROFILE AND AVAILABLE FORMS
Round bar (Diameter): 0.50 to 600mm
Square bar / Flat bar: T3 to 500mm X W3 ~ 1200mm
This alloy is generally smelt in Electric Arc Furnace (EAF), EAF+LF+VD, LF + Electroslag remelting (ESR).
For a purpose of superior quality, it should be smelt via technology of vacuum refining or by agreement.
PRODUCT PROFILE AND AVAILABLE FORMS
Round bar (Diameter): 0.50 to 600mm
Square bar / Flat bar: T3 to 500mm X W3 ~ 1200mm
Steel strip: THK0.5 ~ 2.50 X W8.0 ~ 185mm
Length: Fixed length or random length or based on the customer's special requirement.
Length: Fixed length or random length or based on the customer's special requirement.
Other different shapes based on OEM.
REMARKABLE ITEMS FOR OVERSEAS MARKETS
German series: 1.2083, 1.4021, 1.4028, 1.2344, 1.2343, 1.2379, 1.2312, 1.2738, 1.2767, 1.2360, 1.2581
1.2316, 1.2085, 1.2510, 1.2367, 17CrNiMo6, 34CrNi3Mo, 36CrNiMo8, 718, 718V, WB36 and so on.
American series: 420, 410, H13, H13ESR, D2, P20+Ni, P20+S, O1, O2, H10, H11, 4145H, 4340, P91, P92 and so on.
Japan-Korea series: SUS420J2, SKD11, SKD61, SKD6, DC53, SKS3, SKS31, SKT4, NAK80, HMD, KP4, KP4M
American series: 420, 410, H13, H13ESR, D2, P20+Ni, P20+S, O1, O2, H10, H11, 4145H, 4340, P91, P92 and so on.
Japan-Korea series: SUS420J2, SKD11, SKD61, SKD6, DC53, SKS3, SKS31, SKT4, NAK80, HMD, KP4, KP4M
TECHNICAL SALES ASSISTANCE & SERVICE
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