21-2N
2021-03-31 15:44:21 Origin： Remark：0 Click：
Valve steel 21-2N Specifications, Datasheet 21-2N Chemical, 21-2N Properties from Steelmelting (ESR refined), Blooming, Hot forging, Hot rolling, Heat treatment, Straightening, 100% Ultrasonic flaw detection test, Cold working or Machined. All of these materials conform to Military standard, nuclear power. 100% Ultrasonic test ASTM E2375 /SAE AMS 2154 /SEP 1923 /GB/T 4162 /EN 10228-3.
MATERIAL STANDARDS DATASHEET - Grade 21-2N
OFFICIAL TEST CERTIFICATE - issued by TUV - SGS - BV
MATERIAL CATEGORY - SAE / UNS system exhaust valve Steel
CHEMICAL COMPOSITION (WEIGHT %)
C (％): 0.50 ~ 0.60
Si (％): ≤ 0.25
Mn (％): 7.00 ~ 9.50
P (％) ≤: 0.050
S (％) ≤: 0.035
Cr (％): 19.25 ~ 21.5
Ni (％): 1.50 ~ 2.75
Mo (％): -
Mn (％): 7.00 ~ 9.50
P (％) ≤: 0.050
S (％) ≤: 0.035
Cr (％): 19.25 ~ 21.5
Ni (％): 1.50 ~ 2.75
Mo (％): -
N (%): 0.20 ~ 0.40
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Condition: QT treated
Tensile strength, σb/≥ MPa: 1000 ~ 1250
Yield strength, σ0.2/≥ MPa: 800
Elongation, δ ≥(％): 8.0
Elongation, δ ≥(％): 8.0
Reduction of area, ф ≥ (％): 10.0
Hardness | HB: 265 max.
FORMS AND DIMENSIONS
Round bar (Diameter): 5.5mm to 550mm
Square bar / Flat bar: 3mm to 500mm
Heavy/middle plate via hot rolled: T6 - 300mm X W60 - 1000mm X L1000-12000mm
Sheet steel via cold rolled: T0.5 - 6mm X W10 - 400mm X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3mm X W5 - 200mm X L (or in coil form)
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
Square bar / Flat bar: 3mm to 500mm
Heavy/middle plate via hot rolled: T6 - 300mm X W60 - 1000mm X L1000-12000mm
Sheet steel via cold rolled: T0.5 - 6mm X W10 - 400mm X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3mm X W5 - 200mm X L (or in coil form)
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
If you meet further on any technical enquiry, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
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