STS51 Stockist, STS51 Equivalent Datasheet
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Material technical specifications of KS D3753 -2004 alloy tool steel STS51 data sheet, Grade STS51 Chemical compositions,STS51 Mechanical properties from Steelmaking, ESR melted, Blooming, Hot forging, Gr.STS51 Hot rolling, Heat treatment, Straightening, 100% Ultrasonic test, Cold working, 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 STS51

MATERIAL CATEGORY: alloy tool steel
MATERIAL SPECIFICATIONS: KS D3753 - 2004

CHEMICAL COMPOSITIONS (WEIGHT - %)
C (%):     0.75 ~ 0.85
Si (%):     ≤ 0.35
Mn (%):   ≤ 0.50
P (%)≤:   0.030
S (%)≤:   0.025
Cr (%):    0.20 ~ 0.50
Mo (%):   -
W (%):    - 
V (%):     -
Ni (%):    1.30 ~ 2.00
MECHANICAL PROPERTY AND HARDNESS
Annealing temperature /℃: 750 ~ 800
Annealed hardness, ≤ HB: 207
Quenching temperature /℃: 800 ~ 850
Cooling medium: Oil
Tempering temperature /℃: 400 ~ 450
Hardness under tempered condition ≥HRC: 45
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
Steel strip: THK0.5 ~ 2.50 X W8.0 ~ 185mm
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

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