INTRODUCTION
AISI/ASTM T1 tool steel is one of the original tungsten high speed
steels, although all tungsten steel grades are used to a limited
extent because of the cost and questionable availability of
tungsten. Of the T group steels, the general purpose T1 tool steels
and the high-vanadium-cobalt T15 are most commonly used.
T1 high speed steel is an air or oil hardening tool steel which has
good comprehensive performance. HSS T1 tool steel has a high hardness (HRC62~66), strength, toughness
and heat resistance, which is an excellent cutting tool material.
T-1 tool steel grade is on the whole used for turning, planning &
slotting instruments, tapes, twist drill, threading dies, profile
slicing instruments, broaching instruments & reamers.
Generally, high speed steels are divided into three groups:
- Those bearing the symbol T where tungsten is the major alloying
element;
- Those bearing the symbol M indicating that molybdenum are the
principal alloying element;
- A group of more highly alloyed steels that is capable of attaining
unusually high hardness values.
APPLICATIONS
Generally, high speed steels are used for machining at high speeds.
HSS T1 steel materials are widely used for:
- Broaches
- Drills
- Hobs
- Knurling Tools
- Lathe Tools
- Milling Cutters
- Nut Piercers
- Planer Tools
- Reamers
- Shaving Tools
- Taps
- Thread Cutting Tools
| Steel Grade | 1.3355 / T1 | Application | Tool steel, Mold Steel |
| Shape | Round Bar | Standard | GB, ASTM, DIN,JIS |
| Dimension | Φ2-300 mm; length below 16m | Surface | Black, Bright, Polished, Peeled |
| Technique | Cold drawn; Hot rolled; Forged | Ultrasonic Test | 100% UT Passed |
DELIVERY CONDITIONS
| Diameter (mm) |
| Cold drawn | 10-100 |
| Peeled | 30-160 |
| Grinded | 10-600 |
| Turned | 130-1600 |
| Hot Rolled | 20-280 |
| Hot Forged | 130-1000 |
-EAF+(ESR) or EAF+LF+VD+(ESR)
-HOT rolled or Forged, Annealed
-Surface Finish: Black, Rough Machined, Peeled, Turned or as per given
requirements
-UT 100% passed
-Cutting service provided
-Third Party inspection is acceptable (SGS, BV etc.)
EQUIVALENT GRADES
| AISI/SAE | DIN | JIS | GB |
| T1/T12001 | 1.3355 HS18-0-1 | SKH2 | W18Cr4V |
CHEMICAL COMPOSITION (%)
| C | Si | Mn | P | S | Cr | V | W |
0.65 0.80 | 0.20 0.40 | 0.10 0.40 | ≤ 0.030 | ≤ 0.030 | 3.75 4.50 | 0.90 1.30 | 17.25 18.75 |
MECHANICAL PROPERTIES
| Mechanical properties | Metric | Imperial |
| Hardness, Rockwell C | 63-65 | 63-65 |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elastic modulus | 190-210 GPa | 27557-30457 ksi |
PROCESSING
Forging of AISI HSS T1 Tool Steel
- Preheat T1 high speed steel uniformly and slowly to 850-880°C.
- Increase the forging temperature for T-1 tool steel until
1050-1130°C.
- T1 hss tool steel should be cooled very slowly after forging.
AISI/ASTM T1 Tool Steel Heat Treatment and Properties
| Treatment | Temperature Range | Cooling/Quenching | Notes |
| Forging | 1700-2100° F | Slow. | Cool slowly in dry sand or in other insulating media. |
| Annealing | 1600-1650° F | Cool slowly at a rate of 35° F per hour to 1000° F. | For best results, insulating media is desirable. Hold at
temperature for 2 hours. |
| Stress Relieving | 1100-1300° F | Cool slowly | Stress relieve after rough machining |
| Preheating | 1500-1550° F | | Preheat time in furnace is ¾ Hr. per inch of thickness. Heating up
to temperature as slow as possible. |
| Hardening | 2325-2375° F (furnace) | Quench in air or warm oil. To minimize quenching strains, quench in
salt at 1000° F | For maximum wear resistance, harden at 2375° F. For maximum
toughness and high hardness, harden at 2275° F. |
| 2275-2350° F (salt bath) |
| Tempering | 1022 ° F-1058 ° F | Temper T1 high-speed steel immediately after quenching. Hold for at
least two hours | Double tempering is recommended. The usual tempering time is 2+2
hours. Recommended temperature is 1000-1075° F for cutting tools.
1100-1200° F for shock tools
|
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
- Solid round bar
- Flat bar
- Square bar
- Hexagon bar
- Block
- Plate
- Sheet
- Wire rod
- Strip
Our Advantages
- High mechanical property and quenching, enable the surface share
equal hardness after deal with it
- Good polishing and low roughness
- Making the heat-treatment to harden condition before using it
- Competitive price
- Fast production lead-time
- All the material are inspected with 3 times to meet the highly
standards
- Pure steel quality & stable quality to be guarantee
OUR MAIN PRODUCTS ARE LISTED AS BELOW
Notes:
Available Size:
-Round: Dia. 2-300 mm
-Flat: T. 6-250 mm x W. 20-600 mm
-Block: T. 80-1200 mm x W. 100-1600 mm
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
