MT 309S
2026-06-15 08:32:08 Origin： Remark：0 Click：
ASTM A511/511M - 12 Standard specification for seamless stainless steel mechanical tubing MT 309S round bar, flat bar, plate, forging MT 309S stock available, 1040℃ annealed solution treated
TECHNICAL DATA SHEET - MT 309S
Material specifications: ASTM A511 / 511M - 12
Material category: austenitic type 18.0Cr - 11.0Ni base steel
Official test certificate: issued by TUV - SGS - CNAS
Stock available: round bar 20.0 ~ 180 mm
PRODUCT DESCRIPTION
MT309S is usually produced by EAF / AOD / BEF followed by electro-slag refining (ESR) / VAR if necessary for special purpose.
Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Bars are usually supplied in the annealed, peeled condition.
Final heat treatment - annealing.
Material category: austenitic type 18.0Cr - 11.0Ni base steel
Official test certificate: issued by TUV - SGS - CNAS
Stock available: round bar 20.0 ~ 180 mm
PRODUCT DESCRIPTION
MT309S is usually produced by EAF / AOD / BEF followed by electro-slag refining (ESR) / VAR if necessary for special purpose.
Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Bars are usually supplied in the annealed, peeled condition.
Final heat treatment - annealing.
PROFILES AND DIMENSIONS
Rod / round bar / disc (diameter): 6.0 ~ 870 mm
Square bar & flat bar: 10 ~ 500 mm
Length: random length or based on the customer's special requirement.
Heavy / middle plate via hot rolled: T3 ~ 300 X W 15 ~ 1000 X L mm
Sheet steel via cold rolled: T 0.5 ~ 3 X W20 ~ 1000 X L mm
Steel strip via cold rolled: T 0.3 ~ 3.0 X W 15 ~ 300 X L mm (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
Carbon, C (％): ≤ 0.08
Manganese, Mn (％): ≤ 2.00
Phosphorus, P (％): ≤ 0.040
Sulfur, S (％): ≤ 0.030
Sulfur, S (％): ≤ 0.030
Silicon, Si (％): ≤ 1.00
Nickel, Ni (％): 12.0 ~ 14.0
Chromium, Cr (％): 22.0 ~ 24.0
Chromium, Cr (％): 22.0 ~ 24.0
Molybdenum, Mo (％): -
Titanium, Ti (%): -
Ferrum, Fe (%): balance.
MECHANICAL PROPERTY AT ROOM TEMPERATURE
Heat treatment practice: solution annealing 1040 ℃ rapid cooling
TECHNICAL SALES ASSISTANCE & SERVICE
20+ years focus on special steel manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.
20+ years focus on special steel manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.
We closely cooperate with the professional inspection partners to strictly control the quality and improve the quality manage system, and guarantee the goods delivery each time. It is proved that we are worth of trusting and will be the strategic partner of the supplying chains in the special steels field.
Export packing / Export documents.
Transport by Track, Sea, Courier (FedEx, UPS, DHL) and Air Cargo.
Transport by Track, Sea, Courier (FedEx, UPS, DHL) and Air Cargo.
CNC saw cutting.
Marking by stamping or printing.
Third party inspection service.
Marking by stamping or printing.
Third party inspection service.
JIANGYOU LONGHAI SPECIAL STEEL CO.,LTD
ISO 9001-2015 Certified by UKAS, UICC
Raw Material Stock Available
Custom 450 / GD450 / XM-25 (S45000), 403 ESR, AISI 616 / 422 ESR, B50A365 / 403Cb+
17-4PH / 630, M-152 / 1.4938 / S151D, FV520B / S143 / 1.4594. X22CrMoV12-1
13Х11Н2B2MФ / AE961W, 11Х11Н2B2MФ / 16Х11Н2B2MФ
AISI 615 / S41800, 15-5PH / XM-12 (S15500), A-286 AISI 660 / S66286
10705BU, 10705MBU, 10705AJ, S132, S131, S111, S159, S154
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