Alloy Steel with A2 Cold Work Drawn Toll Stainless Steel Sheet Plate Round Bar Pipe

• Type: Square
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Check Detailed Description
• Technique: Forged
• Shape: Block
• Surface Treatment: Check Detailed Description
• Model NO.: A2
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: check detailed description
• Transport Package: Nude Packing
• Specification: check detailed description
• Trademark: Ningbo Ningshing
• Origin: China

Product Description

Alloy Steel with A2 Cold Work Drawn Toll Stainless Steel Sheet Plate Round Bar Pipe
 

DIN 1.2363 / AISI A2 Cold Work Tool Steel is used for making cutting tools (dies and punches), blanking and punching tools, thread rolling dies, shear blades, trim dies, forming dies, gauges, stamping dies etc..

Dimensions
Block: 80-350 x 100-700 mm

Delivery Condition
EAF+(ESR) or EAF+LF+VD+(ESR), Hot rolled or Forged, Annealed, Black surface or Machined surface, UT SEP1921 Class3 D/d

Equivalence

AISI / SAE	DIN / W.Nr	JIS	GB
A2	1.2363	SKD12	Cr5Mo1V

Chemical Composition(%)

Steel Grade	C	Si	Mn	P	S	Cr	Mo	V
1.2363	0.95-1.05	0.10-0.40	0.40-0.80	≤ 0.030	≤ 0.030	4.80-5.50	0.90-1.20	0.15-0.35
A2	0.95-1.05	0.10-0.50	0.40-1.00	≤ 0.030	≤ 0.030	4.75-5.50	0.90-1.40	0.15-0.50

Characteristics

1. A kind of air hardening tool steel.

2. Good toughness with medium wear resistance and relatively easy to machine.

Heat Treatment
Annealing
800 to 850°C
Slow controlled cooling in furnace at a rate of 10 to 20°C/hr down to approx. 600°C, further cooling in air.
Hardness after annealing: max. 235 HB.

Hardening
950 to 980°C
Oil, salt bath (200 to 250°C or 500 to 550°C), air blast, still air. Tools of intricate shape or with sharp edges should preferably be hardened in air or salt bath. Holding time after temperature equalization:15 to 30 minutes. Obtainable hardness: 63 - 65 HRC

Stress relieving
Approx. 650°C
Slow cooling in furnace. Intended to relieve stresses set up by extensive machining, or in complex shapes. After through heating, hold in neutral atmosphere for 1 - 2 hours.

Tempering
Slow heating to tempering temperature immediately after hardening/time in furnace 1 hour for each 20 mm of workpiece thickness, but at least 2 hours/cooling in air. For certain cases we recommend to reduce tempering temperature and increase holding time.

 

Q1: What is Ningbo Ningshing Precision Machinery Group Co., Ltd ?
A1: Ningbo Ningshing Precision Machinery Group Co., Ltd., formerly known as Ningbo Ningshing Special-Steel Group Co., Ltd., is the leading distributor of Special Steel, and also a professional mold base maker in China. Our business involves special steel trading, machining processing, mold base making, heat treatment, CNC machines manufacturing.


Q2: Are you a manufacturer or a trader? 
A2: For Special Steel, we are the one of the leading distributors and service center in China. 9 warehouses with over 50,000 tons of regular stock. Our workshop has various kinds of equipments for sawing, milling, grinding, drilling etc.
For mold base, we are a professional manufacturer, with 24 sets of CNC machines, 3 axis and 5 axis, CMM for inspection. We produce medium-large sized mold base for plastic injection mold and die casting die.


Q3: How do you control the quality of steels?
A3: Firstly, we have very close and deep relationship with Chinese Prime Mills, choose supplier carefully, and regard them as the long term business partner. Based on the long term cooperation, we concentrate on special steel business and expand the market step by step. Secondly, we have own technical center which is formed by the experienced engineers and technicians whom ever worked for prime mills. We control the quality in production process, in-out warehouse.


Q4:: Which kind of processing can you do?
A4: We do machining processing like cutting, milling, grinding, turning, peeling, drilling, CNC machining. Meanwhile, we do vacuum heat treatment for die and mold.