STC 7
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Technical Specification of KS D3751 - 1999 Carbon tool steel STC 7 data sheet,KS STC 7 Chemical compositions, STC 7 Mechanical properties from Steelmaking, ESR melted, Hot blooming, STC 7 Hot forging, Hot rolling, Heat treatment, Straightening, 100% Ultrasonic flaw test, Cold working, Peeled or rough turned machining. Technical specification KS D3751 - 1999. 100% Ultrasonic test ASTM E2375 /SAE AMS 2154 /SEP 1923 /GB/T 4162 /EN 10228-3.
TECHNICAL DATA SHEET - KS STC 7
MATERIAL CATEGORY: Carbon tool steel
MATERIAL SPECIFICATIONS: KS D3751 - 1999
MATERIAL SPECIFICATIONS: KS D3751 - 1999
CHEMICAL COMPOSITIONS (WEIGHT - %)
C (％): 0.60 ~ 0.70
C (％): 0.60 ~ 0.70
Si (％): ≤ 0.35
Mn (％): ≤ 0.50
P (％)≤: 0.030
S (％)≤: 0.030
P (％)≤: 0.030
S (％)≤: 0.030
Cr (%): ≤ 0.30
Ni (%): ≤ 0.25
Cu (%): ≤ 0.25
HOT WORKING AND HEAT TREATMENT PRACTICE
Annealing temperature /℃: 730 ~ 760
Annealed hardness, ≤ HB: 201
Quenching temperature /℃: 760 ~ 820
Cooling medium: water
Tempering temperature /℃: 150 ~ 200
Hardness under tempered condition HRC: 56
Tempering temperature /℃: 150 ~ 200
Hardness under tempered condition HRC: 56
MELTING PROCESS
This alloy is generally smelt in Non-vacuum furnace + ESR, Electric Arc Furnace (EAF).
For a purpose of superior quality, it should be smelt via manufacturing technology by agreement.
PRODUCT PROFILE AND AVAILABLE FORMS
Round bar (Diameter): 5.50 to 450mm
Square bar / Flat bar: THK 3 to 500mm X Width 3 ~ 1200mm
This alloy is generally smelt in Non-vacuum furnace + ESR, Electric Arc Furnace (EAF).
For a purpose of superior quality, it should be smelt via manufacturing technology by agreement.
PRODUCT PROFILE AND AVAILABLE FORMS
Round bar (Diameter): 5.50 to 450mm
Square bar / Flat bar: THK 3 to 500mm X Width 3 ~ 1200mm
Wire rod (Diameter): 0.30 to 16mm
Steel strip: THK0.15 ~ 2.50 X W8.0 ~ 600mm
Length: Fixed length or random length or based on the customer's special requirement.
Steel strip: THK0.15 ~ 2.50 X W8.0 ~ 600mm
Length: Fixed length or random length or based on the customer's special requirement.
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.
- Email us: lh.steel@hotmail.com
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers.
- Email us: lh.steel@hotmail.com
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