1.2343 H11 SKD61 AISI Hot Work Tool Steel Flat Block Round Bar

• Customization: Available
• Type: Sheet
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Model NO.: H11
• Composition: Check Detailed Description
• Technique: Forged
• Shape: Flat
• Surface Treatment: Check Detailed Description
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Flange Plate
• Delivery Condition: Hot Rolled/Cold-Drawn / Hot Forged
• Stock: Abundant
• Tolerance: +/- 1%
• Heat treatment: Annealed / Q+T
• Transport Package: Nude Packing
• Specification: check detailed description
• Trademark: Ningbo Ningshing
• Origin: China

Product Description

Alloy Steel with 1.2343 H11 SKD61 AISI Hot Work Tool Steel Flat Steel Block Round Bar

Product Description

 

Equivalence
 

AISI / SAE	DIN / W.Nr	JIS	GB
H11	1.2343	SKD6	4Cr5MoSiV

 

Chemical Composition(%)
 

Steel Grade	C	Si	Mn	P	S	Cr	Mo	V
1.2343	0.33-0.41	0.80-1.20	0.25-0.50	≤ 0.030	≤ 0.030	4.80-5.50	1.10-1.50	0.30-0.50
H11	0.30-0.43	0.80-1.20	0.20-0.50	≤ 0.030	≤ 0.030	4.75-5.50	1.10-1.60	0.30-0.60
SKD6	0.32-0.42	0.80-1.20	≤ 0.50	≤ 0.030	≤ 0.020	4.50-5.50	1.10-1.50	0.30-0.50
4Cr5MoSiV	0.33-0.43	0.80-1.20	0.20-0.50	≤ 0.030	≤ 0.030	4.75-5.50	1.10-1.60	0.30-0.60

 

Supply Specifications
 

Condition

Processing
Route

Tolerance
Range

Surface
Quality

Application
Notes

Black

/

Rolled: +3~5 mm
Forged: +10~20 mm

Hot-rolled black scale surface

Economical choice for
large volume orders

Rough
Machined

Milled 4 sides + Rough ground 2 sides

Rolled: +0~1 mm
Forged: +0~5 mm

Clean surface
no heavy scale

Pre-machined surface
ready for further processing

Fully
Machined

6 sides precision
milled + ground

+0.05~0.1 mm

Surface roughness Ra1.6

Ready for direct
CNC machining

Ground
Finish

6 sides fine ground

+0.02~0.05 mm

Mirror finish

For high-precision molds

Custom cutting service available according to drawings

Forging Technique
 

Heat Temperature	Start Forging Temperature	Finish Forging Temperature	Cooling Method
1020-1150 °C	1100-1120 °C	900-850 °C	Pit or Sand Cooling

 

Heat Treatment

 

Annealing
750 to 800°C (1382 to 1472°F)
Slow controlled cooling in furnace at a rate of 10 to 20°C/hr (50 to 68°F/hr) down to approx. 600°C (1112°F), further cooling in air.
Hardness after annealing: max. 235 HB.

Stress relieving
600 to 650°C (1112 to 1202°F)
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 work piece thickness, but at least 2 hours / cooling in air.
It is recommended to temper at least twice.
A third tempering cycle for the purpose of stress relieving may be advantageous.
1st tempering approx. 30°C (86°F) above maximum secondary hardness.
2nd tempering to desired working hardness.
The tempering chart shows average tempered hardness values.
3rd for stress relieving at a temperature 30 - 50°C (86 to 122°F) be low highest tempering temperature.

Hardening
1000 to 1040°C (1832 to 1904°F)
Oil, salt bath (500 - 550°C / 932-1022°F), air
Holding time after temperature equalization: 15 to 30 minutes.
Obtainable hardness:
52 - 56 HRC in oil or salt bath,
50 - 54 HRC in air.





 

Technical Parameters
 

 

Applications

 

 

 

Summary:Why Choose NSPM H11

• Stable supply from leading domestic and overseas tool steel mills

• Complete tool steel grade portfolio

• Competitive pricing advantage

• Large stock and flexible cutting services

• Flexible delivery and supply solutions

• Professional technical support

Company Profile

FAQ

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.