STR 4
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STR 4 Ex-stock, Specifications STR 4 datasheet, STR 4 Forging Bar Plate machined, Grade STR 4 Exporters Technical specifications - KS D3731 - 2002 / 2007. From Melting, ESR & VAR technique, Blooming, Hot forging, Hot rolling, Heat treatment, Straightening, Ultrasonic flaw detection test.
TECHNICAL DATA SHEET - KS D3731 Grade STR 4
TECHNICAL SPECIFICATIONS: KS D3731 - 2002/2007
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
MATERIAL CATEGORY: Martensitic stainless steel bar and plate
CHEMICAL COMPOSITION (WEIGHT %)
C (％): 0.75 ~ 0.85
Si (％): 1.75 ~ 2.25
Mn (％): 0.20 ~ 0.60
P (％) ≤: 0.030
S (％) ≤: 0.020
Cr (％): 19.0 ~ 20.5
Ni (％): 1.15 ~ 1.65
Mo (%): -
N (%): -
MECHANICAL PROPERTY UNDER ROOM TEMP.
Condition: anneal treated 800 ~ 900 Deg.C, slow cooling.
Tensile strength, σb/ ≥ MPa: 883
Yield strength, σ0.2/ ≥ MPa: 686
Elongation, δ (％) ≥: 10.0
Reduction of area, ф (％) ≥: 35.0
Hardness ≤ (HBW): 262 Min.
MELTING PROCESS
The alloy is usually produced by BEF + AOD / EAF, followed by electroslag refining (ESR or VAR ) if necessary for special purpose.
PRODUCT FORMS AVAILABLE
Round bar (Diameter): 5.50 ~ 600mm
Wire rod (Diameter): 0.15 ~ 15mm
Flat bar (Thickness X Width): 10 ~ 400 X 15 ~ 1000mm
Length: random length, fixed length or based on the customer's special requirement.
Form: wire or straightened bar
TECHNICAL SALES ASSISTANCE
If you meet further on any technical inquiry. pleased to EMAIL (sales@ccsteels.com) our resident team of qualified production engineers.
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
MATERIAL CATEGORY: Martensitic stainless steel bar and plate
CHEMICAL COMPOSITION (WEIGHT %)
C (％): 0.75 ~ 0.85
Si (％): 1.75 ~ 2.25
Mn (％): 0.20 ~ 0.60
P (％) ≤: 0.030
S (％) ≤: 0.020
Cr (％): 19.0 ~ 20.5
Ni (％): 1.15 ~ 1.65
Mo (%): -
N (%): -
MECHANICAL PROPERTY UNDER ROOM TEMP.
Condition: anneal treated 800 ~ 900 Deg.C, slow cooling.
Tensile strength, σb/ ≥ MPa: 883
Yield strength, σ0.2/ ≥ MPa: 686
Elongation, δ (％) ≥: 10.0
Reduction of area, ф (％) ≥: 35.0
Hardness ≤ (HBW): 262 Min.
MELTING PROCESS
The alloy is usually produced by BEF + AOD / EAF, followed by electroslag refining (ESR or VAR ) if necessary for special purpose.
PRODUCT FORMS AVAILABLE
Round bar (Diameter): 5.50 ~ 600mm
Wire rod (Diameter): 0.15 ~ 15mm
Flat bar (Thickness X Width): 10 ~ 400 X 15 ~ 1000mm
Length: random length, fixed length or based on the customer's special requirement.
Form: wire or straightened bar
TECHNICAL SALES ASSISTANCE
If you meet further on any technical inquiry. pleased to EMAIL (sales@ccsteels.com) our resident team of qualified production engineers.
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