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630 Stainless Steel Sheet

High Strength & Hardened

Product Name: 630 (17-4PH) Stainless Steel Sheet
Standard: ASTM A564, AMS 5604, GB/T 20878
Grade: 630 (UNS S17400, EN 1.4542)
Thickness: 0.05 – 150mm (customizable)
Width: 15 – 2000mm (customizable)
Surface Finish: 2B, BA, No.4, Polished
Tensile Strength: 795 – 1310 MPa (Varies by aging condition. H900: ~1310 MPa, H1150: ~795 MPa)
Yield Strength (0.2% Offset): 860 MPa (min. in H900 condition)
Elongation: 10% (min. in H900 condition, in 50mm)
Hardness (Rockwell): H900: 40-48 HRC; H1150: 28-36 HRC
Density: 7.80 g/cm³
MOQ: 1 Ton

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TISCO Steel Group (Jiangsu) Co., Limited: Your Trusted Partner for Premium Stainless Steel

As a distinguished supplier and authorized partner of leading Chinese steel mills including TISCO, Tsingshan, BAOSTEEL, and ANSTEEL, we guarantee the origin, quality, and performance of every sheet of 630 Stainless Steel we supply. Our direct mill relationships allow us to offer competitive pricing, reliable lead times, and full material traceability backed by genuine Mill Test Certificates (MTC).

Unlocking the Potential of 630 (17-4PH) Stainless Steel Sheet

630, also known as 17-4PH (Precipitation Hardening), is a martensitic stainless steel renowned for its exceptional combination of high strength, good corrosion resistance, and superb mechanical properties achieved through a simple heat treatment process.

  • Key Advantages:

    • High Strength-to-Weight Ratio: Offers tensile strength up to 1310 MPa (190 ksi) after aging, rivaling many high-strength steels.

    • Excellent Corrosion Resistance: Provides corrosion resistance comparable to 304 stainless steel in many environments, superior to standard martensitic grades.

    • Precipitation Hardenable: Can be heat-treated to achieve a wide range of mechanical properties (e.g., H900, H1150 conditions) with minimal distortion.

    • Good Fabricability: Can be machined and formed in the “solution treated” condition before final aging.

  • Considerations:

    • Its corrosion resistance is not as robust as that of austenitic grades like 316 in highly corrosive environments.

    • Requires careful control of heat treatment parameters to achieve desired properties.

Ideal Applications: This versatile material is perfect for aerospace components, chemical processing parts, high-strength shafts, valves, pump shafts, gears, and nuclear reactor components.

Your Assurance of Quality: Every order is accompanied by complete documentation, ensuring compliance with international standards. We offer customized processing and technical support to meet your precise project requirements.

Contact us today for a competitive quote and experience the TISCO Steel Group difference.

Common Surface Treatments

Product Detail Sheet

Product Name630 Stainless Steel Sheet
Processing TechniquesAustenitic,Ferritic,Martensitic,Duplex,Cold Rolling,Hot Rolling
Grade201, 202, 301, 304, 304L, 309S, 310S, 316, 316L, 321, 409, 410, 410S, 430, 630, 2205, 2507 etc
Austenitic stainless steel200 Series: 201, 202
300 Series: 304, 304L, 309S, 310S, 316, 316L, 316Ti, 317L, 321, 347
Ferritic stainless steel409L, 430, 436, 439, 441, 444, 446
Martensitic stainless steel410, 410S, 416, 420J1, 420J2, 431,440,17-4PH
Duplex and special stainless steelS31803, S32205, S32750, 630, 904L
StandardASTM, GB,DIN, JIS etc
SurfaceN0.1, N0.4, 2D, 2B, HL, BA, 6K, 8K, etc
Delivery time3 to 15 days, subject to the customer and quantity
PackagingStandard export package
MOQ1 Ton
SampleFree sample application

Common Chemical Properties

UNSASTMENJISC%Mn%P%S%Si%Cr%Ni%Mo%
S201002011.4372SUS201≤0.155.5-7.5≤0.06≤0.03≤1.0016.0-18.03.5-5.5–
S202002021.4373SUS202≤0.157.5-10.0≤0.06≤0.03≤1.0017.0-19.04.0-6.0–
S301003011.4319SUS301≤0.15≤2.00≤0.045≤0.03≤1.0016.0-18.06.0-8.0–
S304003041.4301SUS304≤0.08≤2.00≤0.045≤0.03≤0.7518.0-20.08.0-10.5–
S30403304L1.4306SUS304L≤0.03≤2.00≤0.045≤0.03≤0.7518.0-20.08.0-12.0–
S30908309S1.4833SUS309S≤0.08≤2.00≤0.045≤0.03≤0.7522.0-24.012.0-15.0–
S31008310S1.4845SUS310S≤0.08≤2.00≤0.045≤0.03≤1.5024.0-26.019.0-22.0–
S316003161.4401SUS316≤0.08≤2.00≤0.045≤0.03≤0.7516.0-18.010.0-14.02.0-3.0
S31603316L1.4404SUS316L≤0.03≤2.00≤0.045≤0.03≤0.7516.0-18.010.0-14.02.0-3.0
S31703317L1.4438SUS317L≤0.03≤2.00≤0.045≤0.03≤0.7518.0-20.011.0-15.03.0-4.0
S321003211.4541SUS321≤0.08≤2.00≤0.045≤0.03≤0.7517.0-19.09.0-12.0–
S347003471.455SUS347≤0.08≤2.00≤0.045≤0.03≤0.7517.0-19.09.0-13.0–
S405004051.4002SUS405≤0.08≤1.00≤0.04≤0.03≤1.0011.5-14.5≤0.60–
S409004091.4512SUS409≤0.08≤1.00≤0.045≤0.03≤1.0010.5-11.75≤0.50–
S430004301.4016SUS430≤0.12≤1.00≤0.040≤0.03≤0.7516.0-18.0≤0.60–
S434004341.4113SUS434≤0.12≤1.00≤0.040≤0.03≤1.0016.0-18.0––
S444004441.4521SUS444L≤0.025≤1.00≤0.045≤0.03≤1.0017.5-19.5≤1.00–
S40300403–SUS403≤0.155.5-7.5≤0.04≤0.03≤0.5011.5-13.0≤0.60–
S4100004101.40006SUS410≤0.15≤1.00≤0.035≤0.03≤1.0011.5-13.5≤0.60≤1.00
S420004201.4021SUS420J10.16~0.25≤1.00≤0.04≤0.03≤1.0012.0-14.0≤0.75≤1.00
S440A440A1.4028SUS440A0.60~0.75≤1.00≤0.04≤0.03≤1.0016.0-18.0–≤0.75
S32750SAD25071.441 ≤0.03≤1.2≤0.035≤0.02≤0.8024.0-26.06.0-8.03.0-5.0
S31803SAF22051.4462 ≤0.03≤2.0≤0.03≤0.02≤1.0021.0-23.04.0-6.52.5-3.5
N08904904L1.4539 ≤0.0.3≤2.0≤0.035≤0.03≤1.0018.0-20.023.0-25.03.0-4.0

Stainless Steel Material Properties

GradesTensile Strength（ksi）Yield strength（ksi）2-inch Elongation (%)Section Shrinkage (%)Brinell Hardness
301110406070165
30290405570150
30390355055160
30485355570150
304L80305570140
31685356070150
316L78305565145
32185355565150
41075403570155
41675403065155
420955025–241
430F80452550165
15-516014515–330
17-4 (Condition A)1501101045332

Packaging & Shipping

📦 Advanced Protective Packaging
Every stainless steel product undergoes a meticulous, multi-layer packaging process designed to endure complex logistics challenges. We utilize VCI (Vapor Corrosion Inhibitor) rust-inhibiting film, reinforced steel-edge protectors, and customized wooden crates to prevent moisture damage, deformation, and handling accidents. Each package is clearly marked with product details and barcodes for full traceability and operational safety—guaranteeing your order arrives in perfect condition.

🚢 Trusted Shipping Partnerships
We collaborate with globally recognized container lines including ONE, ZIM, MSC, MAERSK, and COSCO, providing flexible and reliable freight solutions to major ports across North America, Europe, Southeast Asia, and beyond. Whether your needs require FOB, CIF, or EXW terms, we manage booking, documentation, and customs clearance to ensure seamless door-to-door delivery.

⏱️ On-Time Global Delivery
With established relationships with tier-1 carriers and experienced project logistics teams, we deliver on commitment—on schedule, on specification, and within budget. You receive not just premium stainless steel, but a logistics experience built on reliability and global execution capability.

Industry Application

🔗 The Value of Stainless Steel
Stainless steel is globally recognized for its outstanding corrosion resistance, strength, and adaptability—serving as an essential material across sectors such as construction, medical equipment, automotive manufacturing, and food processing. Yet, sourcing the appropriate grade involves navigating intricate specifications, diverse international standards, and unpredictable supply chain dynamics.

⚙️ How TISCO Simplifies Sourcing
At TISCO Steel Group (Jiangsu) Co., Limited, we streamline stainless steel procurement. As your dedicated supply partner, we deliver customized solutions—from precise material recommendations and fully certified quality assurance to tailored processing and dependable global shipping—all designed to match your project’s exact needs.

📞 Connect with Us
Explore our product portfolio online, request a personalized quote, or consult directly with our technical specialists. Let TISCO provide the reliable stainless steel solution your project deserves.

FAQ

1. What is the difference between 630 and 17-4PH?

  • They are the same material. “630” is a common Chinese standard designation (GB/QB), while “17-4PH” is the UNS/ASTM name, indicating its composition (17% Cr, 4% Ni, with Precipitation Hardening).

2. Can you provide 630 sheets in different heat treatment conditions?

  • Yes, we typically supply in the Solution Treated (Condition A) state, which is ideal for machining and forming. We can also provide material aged to specific conditions like H900, H1025, H1075, H1100, and H1150 upon request.

3. Do you offer cutting services to size?

  • Absolutely. We provide precision cutting, slitting, and shearing services to deliver sheets tailored to your exact dimensions, minimizing your waste and processing time.

4. What certifications come with the material?

  • All our 630 sheets are supplied with a full Mill Test Certificate (MTC) that verifies chemical composition, mechanical properties, and heat treatment condition, complying with ASTM A564 or equivalent standards.

5. What is the minimum order quantity (MOQ)?

  • Our standard MOQ is 1 Ton. However, we are flexible and can accommodate smaller orders for sample evaluation or specific project needs.

6. How does the corrosion resistance of 630 compare to 304 or 316?

  • 630 offers corrosion resistance generally on par with 304 in many mild environments. It is superior to 410/420 martensitic steels but is not as resistant as 316 in chloride-rich environments.

7. Is 630 (17-4PH) stainless steel magnetic?

  • Yes, it is magnetic in all conditions.

8. What are the main applications for 630 sheets?

  • It is widely used in aerospace fittings, pump shafts, oil & gas components, chemical process equipment, high-strength fasteners, and military applications.

9. How do I request a quote?

  • Please provide the grade (630/17-4PH), thickness, dimensions, quantity, and desired heat treatment condition. We will respond with a detailed quotation promptly.

10. Do you offer free samples?

  • Yes, we provide free sample coupons for quality verification. Please contact us with your requirements and shipping address.

Additional Services

We provide value-added services including rough machining, heat treatment, cutting, machining, rolling, welding, and surface treatment to ensure your finished product is delivered ready for finishing. All forgings are rough machined according to your specifications and include Mill Test Reports (MTR), Mechanical and Physical Property Reports, as well as Ultrasonic, X-Ray, and Non-Destructive Testing (NDT) reports (as ordered or specified).

By choosing TISCO Steel Group (Jiangsu) Co., Limited, you will receive professional solutions tailored to your needs.

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