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{"title":"Hot Rolled 17-4PH Stainless Steel Round Bar with Bright Surface and Diameter 8","imgUrl":"https:\/\/img.chinax.com\/nimg\/e7\/bc\/dac4f879579ef1186e60c53086b2-200x200-1\/hot_rolled_17_4ph_stainless_steel_round_bar_with_bright_surface_and_diameter_8.jpg","attrs":{"Certification":"ISO, AISI, ASTM, EN, DIN, JIS","Minimum Order Quantity":"50 kg","Price":"US $3.13-3.62 \/ kg","Diameter":"8 - 450mm"}}
{"title":"ASTM A276 Bright Annealing UNS S17400 Stainless Steel Round Bar with OD 6-300mm","imgUrl":"https:\/\/img.chinax.com\/nimg\/7b\/89\/306dd724fb1650d6cc746b8a12eb-200x200-1\/astm_a276_bright_annealing_uns_s17400_stainless_steel_round_bar_with_od_6_300mm_and_precipitation_hardening.jpg","attrs":{"Certification":"ISO, AISI, ASTM, EN, DIN, JIS","Minimum Order Quantity":"50 kg","Price":"US $3.44-4.05 \/ kg","Shape":"Round"}}
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{"title":"Grade 201 Stainless Steel Bright Bar Hot Rolled with Diameter 3mm - 50mm","imgUrl":"https:\/\/img.chinax.com\/nimg\/0e\/ea\/ce4dbe173cf279904fc10574ef05-200x200-1\/grade_201_stainless_steel_bright_bar_hot_rolled_with_diameter_3mm_50mm.jpg","attrs":{"Certification":"ISO, AISI, ASTM, EN, DIN, JIS","Minimum Order Quantity":"50 kg","Price":"US $3.46-4.07 \/ kg","Shape":"Round"}}
{"title":"254smo\/1.4547 Bright Black Surface Stainless Steel Round Bar S31254 with OD 6","imgUrl":"https:\/\/img.chinax.com\/nimg\/3f\/55\/db5c514689afc19a56438986dd40-200x200-1\/254smo_2f1_4547_bright_black_surface_stainless_steel_round_bar_s31254_with_od_6_300mm.jpg","attrs":{"Certification":"ISO, AISI, ASTM, EN, DIN, JIS","Minimum Order Quantity":"50 kg","Price":"US $12-16.5 \/ kg","Shape":"Round"}}
{"title":"201 304 316L Stainless Steel Bright Bar with Bright Surface and OD 6-300mm","imgUrl":"https:\/\/img.chinax.com\/nimg\/33\/b9\/fa51a4537525415c1dc402a007ce-200x200-1\/201_304_316l_stainless_steel_bright_bar_with_bright_surface_and_od_6_300mm_mirror_polished_stainless_steel_round_bar.jpg","attrs":{"Certification":"ISO, AISI, ASTM, EN, DIN, JIS","Minimum Order Quantity":"50 kg","Price":"US $1.48-4.11 \/ kg","Shape":"Round"}}
17-4PH (Type 630) is a chromium-copper precipitation hardening stainless steel designed for applications requiring high strength and moderate corrosion resistance. This material maintains high strength up to approximately 600°F (316°C).
General Properties
Alloy 17-4 PH is a precipitation hardening martensitic stainless steel with copper and niobium additions. This grade combines high strength, hardness (up to 572°F / 300°C), and excellent corrosion resistance. Mechanical properties can be optimized through heat treatment, achieving very high yield strength up to 1100-1300 MPa (160-190 ksi).
Composition of 17-4PH Stainless Steel (Grade 630):
Element
Content (%)
C
≤ 0.07
Mn
≤ 1.00
Si
≤ 1.00
P
≤ 0.04
S
≤ 0.030
Cr
15.0 - 17.5
Ni
3.0 - 5.0
Cu
3.0 - 5.0
Nb+Ta
0.15 - 0.45
Mechanical Properties
Condition
Tensile Strength (MPa)
Yield Strength 0.2% Proof (MPa)
Elongation (% in 50mm)
Hardness Rockwell C (HRC)
Hardness Brinell (HB)
Solution Treated
1105 (typ)
1000 (typ)
15 (typ)
38 max
363 max
Condition 900
1310 min
1170 min
10 min
40 min
388 min
Condition 1150
930 min
724 min
16 min
28 min
277 min
Physical Properties
Property
Value
Density
7750 kg/m³
Mean Coefficient of Thermal Expansion (0-100°C)
10.8 µm/m/°C
Mean Coefficient of Thermal Expansion (0-315°C)
11.6 µm/m/°C
Thermal Conductivity (at 100°C)
18.4 W/m·K
Thermal Conductivity (at 500°C)
22.7 W/m·K
Specific Heat (0-100°C)
460 J/kg·K
Electrical Resistivity
800 nΩ·m
Corrosion Resistance
Grade 630 stainless steel offers superior corrosion resistance compared to standard hardenable stainless steels, performing comparably to Alloy 304 in most media. For optimal resistance to stress corrosion cracking, aging temperatures above 1022°F (550°C) are recommended, with 1094°F (590°C) being ideal for H2S media applications.
Heat Treatment
Condition
Hardening Temp (°C)
Time (h)
Typical Hardness Rockwell C
Tensile Strength (MPa)
A (Annealed)
-
-
36
1100
H900
482
1
44
-
H925
496
4
42
1170-1320
H1025
552
4
38
1070-1220
H1075
580
4
36
1000-1150
H1100
593
4
35
970-1120
H1150
621
4
33
930-1080
Processing Characteristics
Welding
Grade 630 stainless steel can be welded using all conventional methods without requiring pre-heating. Proper design considerations are essential to prevent weldment stresses in high-strength applications.
Machining
This material can be machined in its solution-treated condition, with machining rates comparable to grade 304 stainless steel.
Product Images
Applications
Engine components
High-strength boat propeller shafts
Plastic molding dies
Valves and gears
Aerospace components
Offshore equipment
Nuclear industry applications
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Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification:
Verified Supplier
Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...