Active Member
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[China]
Address: Room 1109, Loft Office, Green Land International Plaza, No. 275-8 Guoding East Road, Shanghai 200433, P.R. China. (admin(a)shunitesteel.com)
Contact name:Eric
SHANGHAI UNITE STEEL |
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INTRODUCTION
Alloy 420 is a hardenable, martensitic stainless steel that is a modification of 410. Similar to 410, it contains a minimum of 12% chromium, just sufficient enough to give corrosion resistant properties.
420 has higher carbon content than 410 which is designed to optimize strength and hardness characteristics. It has good ductility it the annealed condition but is capable of being hardened up to Rockwell hardness 50 HRC, the highest hardness of the 12% chromium grades. Due to its hardening properties, 420 is not often welded, although it is possible.
Martensitic stainless steels are designed for high hardness and sometimes other properties are to some degree compromised. Corrosion resistance is lower than the common austenitic grades and their useful operating range is limited by their loss of ductility at sub-zero temperatures and loss of strength by over-tempering at elevated temperatures. Its best corrosion resistance is achieved when the metal is hardened and surface ground or polished.
APPLICATIONS
420 is used for a variety of applications where good corrosion and outstanding hardness is necessary. It is not usually used at temperatures exceeding 800oF (427oC) due to quick hardening and loss of corrosion resistance. Examples of applications that use 420 include:
| Steel Grade | 420 / 420F / 2Cr13 / 3Cr13 | Application | Mentioned above |
| Shape | Round Bar | Standard | GB, ASTM, DIN,JIS |
| Dimension | Φ4-800 mm; length below 10m | Surface | Black, Bright, Polished, Peeled |
| Technique | Cold drawn; Hot rolled; Forged | Ultrasonic Test | 100% UT Passed |
DELIVERY CONDITIONS
| Diameter (mm) | |
| Cold drawn | 4-60 |
| Peeled | 30-100 |
| Grinded | 4-600 |
| Turned | 130-800 |
| Hot Rolled | 20-280 |
| Hot Forged | 130-800 |
EQUIVALENT GRADES OF ASTM 420 / 420F
CHEMICAL COMPOSITION (%)
| C | Si | Mn | P | S | Cr | |
| 420 | ≤ 0.15 | ≤ 1.00 | ≤ 1.00 | ≤ 0.040 | ≤ 0.030 | 12.00 14.00 |
| 2Cr13 | 0.16 0.25 | ≤ 1.00 | ≤ 1.00 | ≤ 0.040 | ≤ 0.030 | 12.00 14.00 |
| 3Cr13 | 0.26 0.35 | ≤ 1.00 | ≤ 1.00 | ≤ 0.040 | ≤ 0.030 | 12.00 14.00 |
| Tempering Temperature | Tensile Strength ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (Brinell) MAX |
| Annealed | 655 | 345 | 25 | 214 max |
| 399°F(204°C) | 1600 | 1360 | 12 | 444 |
| 600°F(316°C) | 1580 | 1365 | 14 | 444 |
| 800°F(427°C) | 1620 | 1420 | 10 | 461 |
| 1000°F(538°C) | 1305 | 1095 | 15 | 375 |
| 1099°F(593°C) | 1035 | 810 | 18 | 302 |
| 1202°F(650°C) | 895 | 680 | 20 | 262 |
| Grade | Tensile Strength ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (Brinell) MAX |
| 2Cr13/20Cr13 | 640 | 440 | 20 | 223 |
| 3Cr13/30Cr13 | 735 | 540 | 12 | 235 |
RESISTANCE
PROCESSING
Machinability
What we can offer?
-We offer a wide range of steel products in a wide variety of dimensions and executions, according to the common international specifications or customize.
-Machining and heat treatment are available.
-Also, we advise you in choosing the right materials.
Shape Available
Our Advantages
OUR AVAILABLE STAINLESS STEEL PRODUCTS ARE AS BELOW
PAYMENT AND SHIPPING
1. Both T/T and L/C will be acceptable
2. Trade Terms: FOB, CIF, CFR
3. The delivery will be in 10-15 days if have stock; For customized items, the delivery will be negotiated by both parties
4. Shipping by sea freight from Shanghai Port (PRC) for Bulk orders, by airfreight or express for samples
COMPANY INFORMATION
Shanghai Unite Steel Trading Co., Ltd
We are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.
In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china.
What’s more, we have built long, deep and close business relationship with dozens of steel company, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!
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 doesn'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 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 US
We are happy to answer your questions and make you an offer for these and other materials. Contact us now for more information.
Your Contact Person
Ms Chilli Ho
Phone/Wechat/Whatsapp +86-181-0187-5575
Skype: chilli.ho@outlook.com
Email: chilli.ho@shunitesteel.com
