Spare Parts Alloy Steel with 1.2767 Tool Steel DIN Cold Work Flat Steel Plate Block Round Bar

• Type: Sheet
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Check Detailed Description
• Model NO.: 1.2767
• Technique: Hot Rolled
• Shape: Flat
• Surface Treatment: Black, Machined
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Die Steel Bar
• Transport Package: Nude Packing
• Specification: check detailed description
• Trademark: Ningbo Ningshing
• Origin: China

Product Description

Spare Parts Alloy Steel with 1.2767 Tool Steel DIN Cold Work Flat Steel Plate Block Round Bar

 

DIN 1.2767 Cold Work Tool Steel is used for making the highly stressed coining tools, cutlery dies, hobbing tools, cold shear blades for heavy gauge material, plastic moulds.

Dimensions
Round: dia.10-500 mm
Hot Rolled Flat: 10-120 x 50-1000 mm
Forged Block: 100-500 x 200-1000 mm

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

Equivalence

AISI / SAE	DIN / W.Nr	JIS	GB
----	1.2767	SKT6	----

Chemical Composition(%)

Steel Grade	C	Si	Mn	P	S	Cr	Mo	Ni
1.2767	0.40-0.50	0.10-0.40	0.20-0.50	≤ 0.030	≤ 0.030	1.20-1.50	0.15-0.35	3.80-4.30

Characteristics

1. Cold work tool steel with high thoughness and full hardenability, also large dimensions.
2. High impact strength and compressive strength.
3. For oil and air hardening.
4. Good polishability.

Heat Treatment
Annealing
610 to 650°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. 285 HB.

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

Hardening
840 to 870°C.
Oil, salt bath (300 to 400°C), air. Holding time after temperature equalization: 15 to 30 minutes.
Obtainable hardness:
53 - 57 HRC in air.
54 - 58 HRC in oil or salt bath.

Tempering
Slow heating to tempering temperature immediately after hardening/time in furnace 1hour for each 20 mm of work piece 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.