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Polished Tool Steel Rod Solid Round Bar S7 / 1.2355 Grade Cutting Service Provided

China SHANGHAI UNITE STEEL certification
China SHANGHAI UNITE STEEL certification
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Polished Tool Steel Rod Solid Round Bar S7 / 1.2355 Grade Cutting Service Provided

Polished Tool Steel Rod Solid Round Bar S7 / 1.2355 Grade Cutting Service Provided
Polished Tool Steel Rod Solid Round Bar S7 / 1.2355 Grade Cutting Service Provided Polished Tool Steel Rod Solid Round Bar S7 / 1.2355 Grade Cutting Service Provided

Large Image :  Polished Tool Steel Rod Solid Round Bar S7 / 1.2355 Grade Cutting Service Provided

Product Details:
Place of Origin: MAINLAND CHINA
Brand Name: UST
Certification: ISO 9001:2008
Model Number: ASTM S7
Payment & Shipping Terms:
Minimum Order Quantity: 3 Metric tons
Price: USD 1200-3000 / Metric Ton
Packaging Details: In standard export packing and seaworthy material with rectangular shape bundle, covered with tarpaulin, in ontainers or in bulk, or upon request
Delivery Time: 15-35 days
Payment Terms: L/C, T/T, D/A, D/P
Supply Ability: 1000 Metric Tons per Month
Detailed Product Description
Matrial: Tool Steel Surface: Black, Bright, Polished, Peeled, Or Upon Request
Standard: GB, ASTM, DIN,JIS Grade: S7 / 1.2355
Service: Cutting Service And 3rd Party Inspection Is Provided Diameter: 20-1000mm
Length: Below 16 Meters Shape: Round Bar
Quality Inspection: SGS, BV Etc. Techniques: Cold Drawn; Hot Rolled; Cold Rolled; Forged
Processing: Annealed Or Quenched And Tempered Provided End: Beveled, Plain End As Required
High Light:

tool steel rod


tool steel round bar

AISI S7 / DIN EN 50CrMoV13-15 1.2355 / 1.2357 Tool Steel Bar / Rod




In tool steel standard ASTM A681, shock-resisting tool steels are designated as group S steels according to the AISI classification system. S1, S2, S5, S6, and S7 are the types of shock-resisting tool steels. AISI S7 tool steel is a shock-resistant air hardening steel. AISI S7 steel has exceptional impact properties plus the highest hardenability of shock resisting grades of tool steel. Steel S7 also possesses good softening resistance at high temperatures which gives it hot work capabilities. Since S7 steel hardens in air, it is also safe and stable in heat treatment.


AISI S7 tools steel has an unusual combination of properties, making it suitable for an extremely wide range of tool and die work – where shock-resistance, medium hot-work properties, or ease of machining and heat-treatment are most important.





Because of its unusual combination of properties, S7 tool steel is suitable and versatile for a wide range of tool and die applications. AISI S7 Steel can be used for hot and cold shock applications, medium hot-work dies and medium-run cold work tools and dies.


Other uses include: Bull Riveters, Concrete Breakers (Moll Points), Riveting Dies, Powder Metal Dies, Notching Dies, Dowels, Drills, Drill Plates, Hubs, Plastic Mold Dies, Cold Forming Dies, Blanking Dies, Bending Dies, engraving dies, machined cavities for plastic molding dies, die-casting dies, shear blades and Master Hobs.


Steel Grade 1.2355 / 1.2357 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





  Diameter (mm)
Cold drawn 10-100
Peeled 30-160
Grinded 10-600
Turned 130-1600
Hot Rolled 20-280
Hot Forged 130-1000



- 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 requirements

- UT 100% passed

- Cutting service provided

- Third Party inspection is acceptable (SGS, BV etc.)




S7/T41907 1.2355/1.2357 5Cr3Mn1SiMo1V




C Si Mn P S Cr


V Mo

















Mechanical Properties


Properties Metric
Hardness, Rockwell C (air cooled from 941°C, 649°C temper temperature) 41
Hardness, Rockwell C (air cooled from 941°C, 449°C temper temperature) 53
Hardness, Rockwell C (air cooled from 941°C, 149°C temper temperature) 57
Modulus of elasticity 207 GPa
Charpy impact (V-notch; air cooled from 941°C; 425°C temper temperature) 13.6 J
Charpy impact (V-notch; air cooled from 941°C; 649°C temper temperature) 16.3 J
Charpy impact (V-notch; air cooled from 941°C; 200°C temper temperature) 16.9 J
Machinability (1% carbon steel) 70.0 – 75.0%
Poisson’s ratio 0.27-0.30





Forging of S7 Tool Steel


Preheat 1200°-1300°F. Forge at 2000°-2050°F. Stop at 1700°F and cool slowly.



S7 Tool Steel Heat Treatment



Anneal in a protective atmosphere. Heat rapidly to 1500 to 1550°F and hold at that temperature for one and one-half hours for each inch of greatest thickness. To obtain best machining properties, cool slowly to 1000°F, and then air-cool. This annealing procedure should produce a hardness of Brinell 197 max.
Stress Relief S7 steel Material: When desirable to relieve the strains of machining, heat slowly to 1050°-1250°F, allow to equalize, then cool in air.



  • Preheat: Warm steel S7 slightly before charging into the preheat furnace 1200°-1300°F, prior to hardening.
  • Harden: 1750°F. Quench S7 tool steel in air if cross section is 2-1/2″ or smaller; sections 2-1/2″ to 6″ should be oil quenched to black (1000°F) followed by air cooling to 150°F. Larger cross sections of S7 steel should be oil quenched to 150°F.
  • Quench: Quench in still air or dry air blast.
  • Temper: Tool steel S7 is normally tempered one hour per inch of section thickness to desired heating rate of 2 hours per inch. Cool in air to room temperature between the two tempers. The tempering temperature varies according to the intended use. Suggested: For cold-working and similar applications, the recommend400°-500°F. Hot working applications: apply a tempering temperature of 900°-1000°F. Never temper at less than 400°F.

Machinability of Tool Steel S7

When S7 steel annealed to Brinell 197 max, steel S7 is rated at 95, as compared to a rating of 100 for a 1.00 pct carbon tool steel.



Polished Tool Steel Rod Solid Round Bar S7 / 1.2355 Grade Cutting Service Provided 0


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



Polished Tool Steel Rod Solid Round Bar S7 / 1.2355 Grade Cutting Service Provided 1



Available Size:
-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




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 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 Details

Contact Person: Neya

Tel: +8615261689453

Send your inquiry directly to us (0 / 3000)