STR 21
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Specifications STR 21 Datasheet, STR 21 Ex-stock STR 21 Properties forging Bar Plate machined, 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 D3732 Grade STR 21
TECHNICAL SPECIFICATIONS - KS D3732 - 2002/2007
OFFICIAL TEST CERTIFICATE - issued by TUV - SGS - BV
MATERIAL CATEGORY - Heat resistant stainless steel bar and plate
CHEMICAL COMPOSITION (WEIGHT %)
C (％): ≤ 0.10
Si (％): ≤ 1.50
Mn (％): ≤ 1.00
P (％) ≤: 0.040
S (％) ≤: 0.030
Cr (％): 17.0 ~ 21.0
Ni (％): ≤ 0.60
Mo (%): -
OFFICIAL TEST CERTIFICATE - issued by TUV - SGS - BV
MATERIAL CATEGORY - Heat resistant stainless steel bar and plate
CHEMICAL COMPOSITION (WEIGHT %)
C (％): ≤ 0.10
Si (％): ≤ 1.50
Mn (％): ≤ 1.00
P (％) ≤: 0.040
S (％) ≤: 0.030
Cr (％): 17.0 ~ 21.0
Ni (％): ≤ 0.60
Mo (%): -
N (%): -
Al (%): 2.00 ~ 4.00
MECHANICAL PROPERTY UNDER ROOM TEMP.
Condition: Annealing, 780 ~ 950 slow colling
MECHANICAL PROPERTY UNDER ROOM TEMP.
Condition: Annealing, 780 ~ 950 slow colling
Tensile strength, σb/ ≥ MPa: 440
Yield strength, σ0.2/ ≥ MPa: 245
Elongation, δ (％) ≥: 15.0
Reduction of area, ф (％) ≥: -
Hardness ≤ (HBW): 216 Max.
Yield strength, σ0.2/ ≥ MPa: 245
Elongation, δ (％) ≥: 15.0
Reduction of area, ф (％) ≥: -
Hardness ≤ (HBW): 216 Max.
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): 5.5 ~ 420mm
Wire rod (Diameter): 0.15 ~ 15mm
Flat bar (Thickness X Width): 10 ~ 400 X 15 ~ 610mm
Length: random length, fixed length or based on the customer's special requirement.
Form: wire or straightened bar
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): 5.5 ~ 420mm
Wire rod (Diameter): 0.15 ~ 15mm
Flat bar (Thickness X Width): 10 ~ 400 X 15 ~ 610mm
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.
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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