Machinabilit
Stainless steel grade 420J2 is machinable both in hardened and tempered conditions such as turning, drilling, and bending; however it is recommended that machining in hardened condition should be avoided as far as possible.
Welding
Welding of stainless steel grade 420J2 is easy. It is recommended that welding in annealed or hardened and tempered conditions should be avoided as it causes formation of brittleness, resulting in cold cracking due to contraction stresses.
Pre-heating and inter-pass temperature control during welding, followed by very slow cooling and post-weld annealing are good measures to take to prevent cracking.
Annealing
Annealing of this material can be performed by heating uniformly to 840-900°C (1544-1652°F) and held until the temperature is uniform throughout the section. Soaking and cooling is required.
Heat Treatment
Stainless steel grade 420J2 has to be heated uniformly to 730-790°C (1346-1454°F) and held until temperature is uniform throughout the section.
Hardening
Stainless steel grade 420J2 can be hardened by heating 950-1020°C (1742-1868°F) and held until temperature is uniform throughout the section. This should be followed by quenching in oil or air cooling. Tempering should be done when it is slightly warm.
Applications
Stainless steel grade 420J2 is used in the following application areas:
Surgical instruments
Daggers and swords
Budget knives and diving knives
Haircutting scissors and domestic scissors
ASTM 1.4438 317L stainless steel rods
Stainless steel round steel according to the production process can be divided into hot rolling, forging and cold drawn three kinds. The specifications of the hot rolled stainless steel round bar is 5.5 to 250 mm. Among them: 5.5-25 mm small stainless steel round bar mostly to straight into a bundle of supplies, commonly used for reinforcement, bolt, and various mechanical parts; Greater than 25 mm stainless steel round steel, mainly used in the manufacture of mechanical parts and seamless steel tube billet.
ASTM 1.4438 317L stainless steel rods
| Product Name |
Hotsales ISO stainless steel rod |
| Width |
Customer's Requirement |
| Thickness |
0.4-80mm |
| Tolerance of Thickness |
0.1mm--4mm |
| Length |
Customer's Requirements |
| Surface |
2B, BA, BK, 16K, NO.4 |
| Ni content |
8-10% |
| Shape |
Coil/ Sheet/ Plate |
ASTM 1.4438 317L stainless steel rods
| Characteristics |
Applications |
| Finished by heat treatment, pickled after cold rolled, followed by skin pass line to be brighter and more smooth surface |
Medical Instruments, Tableware |
| Bright heat treated after cold rolled |
Kitchen Utensils, Kitchen Ware,architectual Purpose |
| Has a smooth surface and a specular gloss after grinded and polished |
Construction Decoration, Elevator decoration, industrial use |
| Has a smooth surface and a specular gloss after grinded and polished |
Construction, decoration, industry |
| Polishing with No. 150 No.180 mesh Abrasives |
Bathroom, construction, electrical equipments |
ASTM 1.4438 317L stainless steel rods
| Properties |
304 |
201 |
430 |
| C |
≤0.08% |
≤0.15% |
≤0.12% |
| Si |
≤1.0% |
≤1.0% |
≤0.75% |
| Mn |
≤2.0% |
5.5-7.5% |
≤1% |
| P |
≤0.045% |
≤0.05% |
≤0.040% |
| S |
≤0.03% |
≤0.03 |
≤0.030% |
| Cr |
18-20% |
16-18% |
16.00-18.00% |
| Ni |
8-10% |
3.5-5.5% |
≤0.60% |
| Tensile Strength (Mpa) |
≥520 |
520 |
-- |
| Yield Strength 0.2 (Mpa) |
≥205 |
275 |
-- |
| Elongation (5%) |
≥40 |
55-60 |
-- |
| Hardness |
≤187HB, ≤90HRB,≤200HV |
HRB≤183N/mm2 |
-- |
| Density(20°C g/cm3) |
7.93 |
7.93g/cm3 |
7.75g/cm3 |
| Melting Point(C) |
1398-1454 |
|
1427k |
| Resistivity(20°c) |
0.73 |
-- |
-- |
Stainless steel maintenance:
(1) Regular cleaning and maintenance
(2) Pay attention to prevent the occurrence of the phenomenon of surface scratches
(3) Use soap, weak detergent or warm water to remove surface dust, dirt
(4) In addition to the surface of the binder with alcohol or an organic solvent (ether, benzene)
(5) Use neutral detergent or ammonia solution in addition to surface oil
(6) With 10% nitric acid or abrasive detergent in addition to the surface of the embroider caused by the dirt.
FAQ
Q:Are you a manufacturer or merely a trader?
A:We are group of companies and owned manufacturer bases and trading company.We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc.All material are with high quality and competitive price.
Q:How do you guarantee the quality of your product?
A:Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need.Secondly, we have a complete set of inspection system and every process is checked by QC.Quality is the lifeline of enterprise survival.
Q:Delivery time?
A:We have ready stock for most of material grades in our warehouse.If the material don't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.
Q:What is the payment term?
A:T/T or L/C.
Q:Can you provide a sample for our testing before confirm the order?
A:Yes.We can provide sample to you for approval before you place an order to us.Free sample is available if we have stock.
Q:Can we visit your company and factory?
A:Yes, warmly welcome!We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come.
Contact Info:
Susan huang
Tel: +0086 16637669561
shanghaibozhong.en.made-in-china.com shanghaibozhong.en.made-in-china.com
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