AISI A2 / DIN EN X100CrMoV5 1.2363 Cold-Work Tool Steel Bar / Rod
AISI A2 tool steel is one of ‘A’ group cold works steel in ASTM
A681 standard. A2 Tool Steel is a versatile, air hardening chromium
alloy tool steel that replaces O1 tool steel when safer hardening,
less distortion and increased wear resistance are required. AISI
type A2 steel is intermediate in wear resistance between O1
oil-hardening tool steel and D2 high-carbon, high-chromium tool
Characteristics of A2 tool steel include:
- Good machinability,
- High compressive strength,
- High dimensional stability after hardening and tempering.
- Good hardenability, very good non-deforming properties, deep
- Good wear resistance
AISI A2 tool steel takes a place between AISI O1 and AISI D2,
offering an excellent combination of good wear resistance and
toughness. It may be regarded, therefore, as a“universal” cold work
Typical Applications for AISI/ASTM A2 steels materials: Blanking dies, block and ring gauges, coining, cold forming, cold
trimming and forming dies, cold shears, rolls, knurls and knurling
tools, machine parts, mandrels, punches and punch plates, reamers,
shear and slitter blades, stamping dies and threading tapes.
|Steel Grade||1.2363||Application||Tool steel, Mold Steel|
|Shape||Round Bar||Standard||GB, ASTM, DIN,JIS|
|Dimension||Φ20-1000 mm; length below 16m||Surface||Black, Bright, Polished, Peeled|
|Technique||Cold drawn; Hot rolled; Forged||Ultrasonic Test||100% UT Passed|
- EAF+(ESR) or EAF+LF+VD+(ESR)
- HOT rolled; Cold rolled; Forged; Cold Drawn
- Heat Treatment: Untreated, Annealing, N+T, Q+T
- Smelting: EAF+LF+VD (+ESR)
- Surface Finish: Black, Rough Machined, Peeled, Turned or as per given
- UT 100% passed
- Cutting service provided
- Third Party inspection is acceptable (SGS, BV etc.)
CHEMICAL COMPOSITION (%)
|Hardness, Rockwell C (as air-hardened (63-65 HRC average), 60-62
HRC at 205°C, 59-61 HRC at 260°C, 58-60 HRC at 315°C, 57-59 HRC at
370°C and 425°C and 480°C, 56-58 HRC at 540°C, 50-52 HRC at 595°C,
42-44 HRC at 650°C)||64||64|
|Bulk modulus (typical for steels)||140 GPa||20300 ksi|
|Machinability (based on carbon tool steel)||65%||65%|
|Shear modulus||78.0 GPa||11300 ksi|
|Elastic modulus||190-210 GPa||27557-30457 ksi|
Forging of AISI A2 Tool Steel
Heating A2 steel for forging must be done slowly and uniformly.
Heat the steel A2 slowly to 700°C then more rapidly to 1050-1100°C.
Avoid working below 899°C(1650°F). After forging cool very slowly
in lime, mica, dry ashes or furnace. AISI A2 steel should always be
annealed after forging.
AISI A2 Tool Steel Heat Treatment
Heat slowly to 670-700°C, soak for a minimum of two hours per 25mm
of section then cool down in the furnace.
To prevent decarburization use a controlled atmosphere furnace or
pack in a sealed container using some inert material. To anneal A2
tool steel for lowest hardness, heat slowly to 899°C(1650°F) and
hold at this temperature for about two hours per inch of greatest
cross-section. Cool steel A2 at a rate of 20°F (10°C) per hour to
650°C (1200°F) and reheat to 732°C (1350°F); hold 3 hours per inch
of greatest cross-section; furnace cool at 20 degrees per hour to
593°C (1100°F); then furnace-cool to 482°C (900°F) and air-cool.
Preheating temperature: 1200–1380°F (650–750°C). Austenitizing
temperature: 1700 –1780°F (925–970°C) but usually 1720–1760°F
Heat uniformly and thoroughly to the desired temperature and hold
for 25 minutes per cm of thickness. Tool steel A2 can be double
tempering, after intermediate cooling to room temperature. Temper
at 200°C for a balance of hardness and strength or 350°C where
strength is more important than hardness. A minimum holding time of
2 hours per inch of greatest cross-section should be used.
Martempering bath or fluidized bed at 360–430°F (180–220°C) or
840–1020°F (450–550°C) then cool in air/ Circulating air or atmosphere/ Vacuum furnace with overpressure of gas at cooling/ Oil (only for small and uncomplicated tools)
Nitriding will give a hard diffused surface layer which is very
resistant to wear and erosion, and also increases corrosion
resistance. Nitriding AISI A2 steels in ammonia gas at a
temperature of 975°F (525°C) gives a A2 steel surface hardness of
approx. 1000 HV1. 2 hours nitrocarburizing treatment at 1060°F (570°C) gives a
surface hardness of approx. 900 HV1. The case depth having this
hardness will be 0.0004–0.0008″ (10–20 µm).
A. Welding in order to harden the soft annealed tool steel A2
- Heat to austenitizing temperature
- Cool to approx. 500°C (932°F)
- Weld at approx. 500°C (932°F)
- Cool to approx. 100°C (212°F)
- Hard facing electrode
B. Repair welding of A2 tool steels in hardened and tempered
- Preheat to the tempering temperature (min. 200°C) (392°F)
- Weld at tempering temperature
- Heat immediately to tempering temperature, but max. 300°C (572°F).
Soak the steels for 3 hours
- Cool in air to approx. 80°C (176°F)
- Heat to tempering temperature. Soak for 2 hours
- Hard facing electrode
C. Welding of soft annealed tool steel A2
- Preheat to 300-500°C (572-932°F)
- Weld at 300-500°C (572-932°F)
- Stress relieve immediately.
- Cr-Mo alloy electrode for welding structural steel
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.
- Solid round bar
- Flat bar
- Square bar
- Hexagon bar
- Wire rod
- 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
- Pure steel quality & stable quality to be guarantee
OUR MAIN PRODUCTS ARE LISTED AS BELOW
-Round: Dia. 20-1000 mm
-Flat: T. 10-120 mm x W. 60-810 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
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!
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
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.
We are happy to answer your questions and make you an offer for
these and other materials. Contact us now for more information.