Chemical Composition Element Content (wt. %) C ≤0.070 Si ≤1.00 Mn ≤1.00 P ≤0.040 S ≤0.030 Cr 15.0–17.5 Ni 3.0–5.0 Mo — N — Other Cu: 3.0–5.0; Nb+Ta: 0.15–0.45; Fe: Balance

Mechanical Properties Condition Tensile Strength Yield Strength (0.2%) Elongation Hardness Condition A (solution treated) ≥1100 ≥1000 ≥10 ≈≤363 HB (reference)

Aerospace components Oil and gas equipment Valves and pumps Power-generation equipment Chemical processing High-strength mechanical components

Chemical Composition Element Content (wt. %) C ≤0.070 Si ≤1.00 Mn ≤1.00 P ≤0.040 S ≤0.030 Cr 15.0–17.5 Ni 3.0–5.0 Mo — N — Other Cu: 3.0–5.0; Nb+Ta: 0.15–0.45; Fe: Balance

Mechanical Properties Condition Tensile Strength Yield Strength (0.2%) Elongation Hardness Condition A (solution treated) ≥1100 ≥1000 ≥10 ≈≤363 HB (reference)

Aerospace components Oil and gas equipment Valves and pumps Power-generation equipment Chemical processing High-strength mechanical components

630 Stainless Steel Round Pipe

Grade: 630/17-4PH/S17400

Size:

Seamless: 6mm*1mm-720mm*50mm

Welded: 12mm*0.5mm-2000mm*100mm

Coiled: 4mm*0.3mm-32mm*3mm

Standard: ASTM A312, ASTM A213 etc.

Surface: No.1(Pickling), Bright(Polished)

630 Stainless Steel Pipe, commonly known as 17-4PH, is a precipitation-hardening stainless steel offering high strength, good corrosion resistance, and useful toughness. Its properties can be adjusted through aging treatments, allowing the material to meet different combinations of strength and ductility. 17-4PH pipe and tubular components are used in aerospace, chemical processing, oil and gas, power generation, valves, pumps, and high-strength mechanical systems.

Chemical Composition

Element	Content (wt. %)
C	≤0.070
Si	≤1.00
Mn	≤1.00
P	≤0.040
S	≤0.030
Cr	15.0–17.5
Ni	3.0–5.0
Mo	—
N	—
Other	Cu: 3.0–5.0; Nb+Ta: 0.15–0.45; Fe: Balance

Mechanical Properties

Condition	Tensile Strength	Yield Strength (0.2%)	Elongation	Hardness
Condition A (solution treated)	≥1100	≥1000	≥10	≈≤363 HB (reference)

Aerospace components
Oil and gas equipment
Valves and pumps
Power-generation equipment
Chemical processing
High-strength mechanical components

Introduction

Specification

Chemical Composition

Element	Content (wt. %)
C	≤0.070
Si	≤1.00
Mn	≤1.00
P	≤0.040
S	≤0.030
Cr	15.0–17.5
Ni	3.0–5.0
Mo	—
N	—
Other	Cu: 3.0–5.0; Nb+Ta: 0.15–0.45; Fe: Balance

Mechanical

Mechanical Properties

Condition	Tensile Strength	Yield Strength (0.2%)	Elongation	Hardness
Condition A (solution treated)	≥1100	≥1000	≥10	≈≤363 HB (reference)